Square and square root explained simply filetype pdf Lambeth, Oxford County

square and square root explained simply filetype pdf

Squares Cubes - Square Root Chart - byrdmiddleschool.org square root and a cube root. Suggest students expand out radicand expressions , and have them circle triples when they are simplifying cube roots and circle pairs when simplifying square roots.

Transposition of formulae mathcentre.ac.uk

Simplifying Square Roots of Square Roots by Cyber Tester. Rationalisation is a method of simplifying a faction having a surd either as its denominator or as both the denominator and numerator such that it can be re-written without a surd in its denominator., Simplifying Radical Expressions. z. Radical: square roots and higher roots. z. Shorthand method of writing roots • Use fractional exponent • Not necessarily a fractional value of exponent.

The square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. Note that (−4) × (−4) = 16 too, so −4 is also a square root of 16. The symbol is √ which always means the positive square root number inside the square root is closest to and use that to make an estimate. This works well for square roots that This works well for square roots that are relatively close to a perfect square.

1 Nested Square roots Yue Kwok Choy Nested square roots problems are very interesting. In this article, we investigate some mathematical techniques applied to this topic that most senior secondary school students can Simplifying Square Roots Primary SOL A.3 The student will express the square roots and cube roots of whole numbers and the square root of a monomial algebraic expression in simplest radical form. Related SOL A.2, A.4 Materials Graphing calculators Vocabulary square root, perfect square, squaring (earlier grades) simplest radical form, radicand (A.3) Student/Teacher Actions (what …

That is, the definition of the square root says that the square root will spit out only the positive root. On a side note, let me emphasize that "evaluating" an expression (to find its one value) and "solving" an equation (to find its one or more, or no, solutions) are two very different things. Square Roots Worksheet Author: Maria Miller Subject: Square Roots worksheet Keywords: square root, simplify, worksheet Created Date: 12/3/2014 4:04:24 PM

The square root and square are opposite operations, just like multiplication and division are opposite and addition and subtraction are opposites. Example: Write the related square and square root equations for 6 2 and 7 2 . Triangle, Triangle, Triangle 3 Part 3 Create a summary of your work. Show all your calculations. Explain your thinking. Take It Further Draw an obtuse triangle on grid paper.

If you're asked to estimate the square root of a number that is not a perfect square (without the aid of a calculator) there are some simple steps you can take to find an answer. First, you can estimate to get as close as you can with the aid of two perfect square roots that the number is between. Next, divide the number you're trying to find the square root of by one of the perfect square xn plus 1 would be square root of a times 1 plus epsilon n plus a divided by square root of a 1 plus epsilon n divided by 2. Just plugging it in, the value of xn.

Quadratic and Square Root Functions Algebra II Square Roots & Quadratics: What’s the Connection? Page 11 Calculator Notes to Get Started ( Problem i) Key strokes to draw the inverse. You have to input Y 1 first. The calculator just plots the points for the inverse of the function in Y 1 Memorize cubes and squares of numbers up to 35. Learn tricks to find squares and cubes of numbers greater than 35. Learn tricks to find cube roots and square roots of large number.

Square and Square Roots For more such worksheets visit www.edugain.com Answer the questions (1) The total population of a village is a perfect square. The number of men in the village is 18956, and the number of women in the village is 30684. If we know that the number of children in the village is also a perfect square and is more than 9400, then what is the smallest possible number of number inside the square root is closest to and use that to make an estimate. This works well for square roots that This works well for square roots that are relatively close to a perfect square.

A42 Appendix E: Absolute Value positive square root is denoted by √ a and the negative square root by − √ a. For example, the positive square root of 9 is √ 9 = 3, and the negative square root of 9 is − √ 9 =−3. Readers who may have been taught to write √ 9 as ±3 should stop doing so, since it is incorrect. Itisacommonerrortoreplace √ a2 bya There are two methods to simplify square root. Here is Method 1: 12 = 2 2⋅ ⋅ 3 = 2 3 1. First, we factor 12 into 2⋅2⋅3. You might need to go to MTH20 content and review how to build a factor tree for a number. 2. Next, since we have a pair of 2's inside the square root, we can take them out, and they become one 2 outside the square root symbol. 3. Since the 3 is alone inside the square

258 Chapter 6 Square Roots and the Pythagorean Theorem STATE STANDARDS MA.8.G.2.4 MA.8.A.6.2 MA.8.A.6.4 S 6.5 Using the Pythagorean Theorem How can you use the Pythagorean Theorem to solve real-life problems? Work with a partner. a. A baseball player throws a ball from second base to home plate. How far does the player throw the ball? Include a diagram showing how you got … The square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. Note that (−4) × (−4) = 16 too, so −4 is also a square root of 16. The symbol is √ which always means the positive square root

Squares and square roots Square roots - integers Find each square root. Round it to the nearest whole number. 7) 13) 39 81 34 296 8) 14) 24 197 When you run out of digits simply add two zeros to the end and bring them down instead. Once you do this, set up another diagram (which turns out to be a magnitude of 100 larger than the previous).

4 A perfect square is a positive integer that has an exact square root; it is a rational number (more specifically, also a positive integer). Square roots of numbers that are not perfect squares are irrational numbers and therefore we must estimate these roots to a certain 258 Chapter 6 Square Roots and the Pythagorean Theorem STATE STANDARDS MA.8.G.2.4 MA.8.A.6.2 MA.8.A.6.4 S 6.5 Using the Pythagorean Theorem How can you use the Pythagorean Theorem to solve real-life problems? Work with a partner. a. A baseball player throws a ball from second base to home plate. How far does the player throw the ball? Include a diagram showing how you got …

9.2 Simplifying Radical Expressions

square and square root explained simply filetype pdf

Transposition of formulae mathcentre.ac.uk. 4 A perfect square is a positive integer that has an exact square root; it is a rational number (more specifically, also a positive integer). Square roots of numbers that are not perfect squares are irrational numbers and therefore we must estimate these roots to a certain, on the binomial square to show these units. To find the area of the binomial square, we could simply count the number of squares in the grid (there are eighty-one)..

Simplifying Square Roots VDOE. That is, the definition of the square root says that the square root will spit out only the positive root. On a side note, let me emphasize that "evaluating" an expression (to find its one value) and "solving" an equation (to find its one or more, or no, solutions) are two very different things., on the binomial square to show these units. To find the area of the binomial square, we could simply count the number of squares in the grid (there are eighty-one)..

9.2 Simplifying Radical Expressions

square and square root explained simply filetype pdf

Transposition of formulae mathcentre.ac.uk. Simplifying Square Roots Primary SOL A.3 The student will express the square roots and cube roots of whole numbers and the square root of a monomial algebraic expression in simplest radical form. Related SOL A.2, A.4 Materials Graphing calculators Vocabulary square root, perfect square, squaring (earlier grades) simplest radical form, radicand (A.3) Student/Teacher Actions (what … (12)If the square root of 3 is 1.73, then find the square root of 1728. (13)Which is the smallest number that can be used to divide 133848 to give a perfect square? (14)What is the smallest number that must be subtracted from 510 to get a perfect square?.

square and square root explained simply filetype pdf

  • Squares and Square Roots Math Is Fun
  • The Lost Art of Square Roots – Math Hacks – Medium
  • The Lost Art of Square Roots – Math Hacks – Medium

  • on the binomial square to show these units. To find the area of the binomial square, we could simply count the number of squares in the grid (there are eighty-one). An article and research paper describe a fast, seemingly magical way to compute the inverse square root (1/sqrt(x)), used in the game Quake. I'm no graphics expert, but appreciate why square roots are useful. The Pythagorean theorem computes distance between points, and dividing by distance helps

    A42 Appendix E: Absolute Value positive square root is denoted by √ a and the negative square root by − √ a. For example, the positive square root of 9 is √ 9 = 3, and the negative square root of 9 is − √ 9 =−3. Readers who may have been taught to write √ 9 as ±3 should stop doing so, since it is incorrect. Itisacommonerrortoreplace √ a2 bya 258 Chapter 6 Square Roots and the Pythagorean Theorem STATE STANDARDS MA.8.G.2.4 MA.8.A.6.2 MA.8.A.6.4 S 6.5 Using the Pythagorean Theorem How can you use the Pythagorean Theorem to solve real-life problems? Work with a partner. a. A baseball player throws a ball from second base to home plate. How far does the player throw the ball? Include a diagram showing how you got …

    xn plus 1 would be square root of a times 1 plus epsilon n plus a divided by square root of a 1 plus epsilon n divided by 2. Just plugging it in, the value of xn. The square root sign is √ or √. √16 means the square root of 16. 4 x 4 = 16 The square root of 16 is 4. √16 = 4 Find the square root of the following numbers: 21) 4 26) 49 22) 9 27) 64 23) 16 28) 64 24) 25 29) 81 25) 36 30) 100 You may use a calculator for the following section! 31) Find which number, when multiplied by itself, gives 2809. 32) Find two consecutive numbers with a

    Triangle, Triangle, Triangle 3 Part 3 Create a summary of your work. Show all your calculations. Explain your thinking. Take It Further Draw an obtuse triangle on grid paper. The “square” operation x2 and “square root” operation x1/2 = x are examples of inverse functions of one another, for x 0. That is, the effect of applying of either one, followed immediately by the

    For this unit square, the inverse image of any number placed on a number line along a side of the square and outside the square, lies within the unit interval that defines the edge of the square. Fig. 3. Square and Square Roots For more such worksheets visit www.edugain.com Answer the questions (1) The total population of a village is a perfect square. The number of men in the village is 18956, and the number of women in the village is 30684. If we know that the number of children in the village is also a perfect square and is more than 9400, then what is the smallest possible number of

    Squares and square roots Square roots - integers Find each square root. Round it to the nearest whole number. 7) 13) 39 81 34 296 8) 14) 24 197 If you're asked to estimate the square root of a number that is not a perfect square (without the aid of a calculator) there are some simple steps you can take to find an answer. First, you can estimate to get as close as you can with the aid of two perfect square roots that the number is between. Next, divide the number you're trying to find the square root of by one of the perfect square

    on the binomial square to show these units. To find the area of the binomial square, we could simply count the number of squares in the grid (there are eighty-one). Triangle, Triangle, Triangle 3 Part 3 Create a summary of your work. Show all your calculations. Explain your thinking. Take It Further Draw an obtuse triangle on grid paper.

    Rationalisation is a method of simplifying a faction having a surd either as its denominator or as both the denominator and numerator such that it can be re-written without a surd in its denominator. The square root sign is √ or √. √16 means the square root of 16. 4 x 4 = 16 The square root of 16 is 4. √16 = 4 Find the square root of the following numbers: 21) 4 26) 49 22) 9 27) 64 23) 16 28) 64 24) 25 29) 81 25) 36 30) 100 You may use a calculator for the following section! 31) Find which number, when multiplied by itself, gives 2809. 32) Find two consecutive numbers with a

    An expression involving square roots is in simplest form if 1. There are no perfect-square factors in a radical. 2. No fraction appears inside a radical. 3. No radical appears in the denominator. Rules and Properties: Square Root Expressions in Simplest Form For instance, considering condition 1, is in simplest form because 17 has no perfect-square factors whereas is not in simplest form square root and a cube root. Suggest students expand out radicand expressions , and have them circle triples when they are simplifying cube roots and circle pairs when simplifying square roots.

    In statistics and its applications, the root mean square (abbreviated RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers). The RMS is also known as the quadratic mean and is a particular case of the generalized mean with exponent 2. Quadratic and Square Root Functions Algebra II Square Roots & Quadratics: What’s the Connection? Page 11 Calculator Notes to Get Started ( Problem i) Key strokes to draw the inverse. You have to input Y 1 first. The calculator just plots the points for the inverse of the function in Y 1

    square and square root explained simply filetype pdf

    An expression involving square roots is in simplest form if 1. There are no perfect-square factors in a radical. 2. No fraction appears inside a radical. 3. No radical appears in the denominator. Rules and Properties: Square Root Expressions in Simplest Form For instance, considering condition 1, is in simplest form because 17 has no perfect-square factors whereas is not in simplest form When you run out of digits simply add two zeros to the end and bring them down instead. Once you do this, set up another diagram (which turns out to be a magnitude of 100 larger than the previous).

    6.5 Using the Pythagorean Theorem Big Ideas Math

    square and square root explained simply filetype pdf

    6.5 Using the Pythagorean Theorem Big Ideas Math. Simplifying Square Roots Primary SOL A.3 The student will express the square roots and cube roots of whole numbers and the square root of a monomial algebraic expression in simplest radical form. Related SOL A.2, A.4 Materials Graphing calculators Vocabulary square root, perfect square, squaring (earlier grades) simplest radical form, radicand (A.3) Student/Teacher Actions (what …, Squares and square roots Square roots - integers Find each square root. Round it to the nearest whole number. 7) 13) 39 81 34 296 8) 14) 24 197.

    Simplifying Square Roots VDOE

    Nested Square roots QC. Triangle, Triangle, Triangle 3 Part 3 Create a summary of your work. Show all your calculations. Explain your thinking. Take It Further Draw an obtuse triangle on grid paper., Square and Square Roots For more such worksheets visit www.edugain.com Answer the questions (1) The total population of a village is a perfect square. The number of men in the village is 18956, and the number of women in the village is 30684. If we know that the number of children in the village is also a perfect square and is more than 9400, then what is the smallest possible number of.

    Square root: √ — 64 = 8 Cube Explain your reasoning. a. 43/2 b. 324/5 c. 6253/4 d. 493/2 e. 1254/3 f. 1006/3 MAKING MATHEMATICAL To be profi cient in math, you need to understand nitions and previously established results. EEssential Questionssential Question How can you use a rational exponent to represent a power involving a radical? Previously, you learned that the nth root of a can The square root sign is √ or √. √16 means the square root of 16. 4 x 4 = 16 The square root of 16 is 4. √16 = 4 Find the square root of the following numbers: 21) 4 26) 49 22) 9 27) 64 23) 16 28) 64 24) 25 29) 81 25) 36 30) 100 You may use a calculator for the following section! 31) Find which number, when multiplied by itself, gives 2809. 32) Find two consecutive numbers with a

    number inside the square root is closest to and use that to make an estimate. This works well for square roots that This works well for square roots that are relatively close to a perfect square. Squares and square roots Square roots - integers Find each square root. Round it to the nearest whole number. 7) 13) 39 81 34 296 8) 14) 24 197

    Indices (Powers) & Roots What do Powers/Indices mean?: 2 is ‘ to the power of 2‘ and means × (we usually say ‘ squared’) 3 is ‘ to the power of 3’ and means × × (we usually say ‘ cubed) 4 is ‘ to the power of 4’ and means × × × etc…. The superscript numbers (2, 3 & 4 above) are known as indices or powers. When the power is 2 we say “squared”, when the power is 3 If you're asked to estimate the square root of a number that is not a perfect square (without the aid of a calculator) there are some simple steps you can take to find an answer. First, you can estimate to get as close as you can with the aid of two perfect square roots that the number is between. Next, divide the number you're trying to find the square root of by one of the perfect square

    When you run out of digits simply add two zeros to the end and bring them down instead. Once you do this, set up another diagram (which turns out to be a magnitude of 100 larger than the previous). (12)If the square root of 3 is 1.73, then find the square root of 1728. (13)Which is the smallest number that can be used to divide 133848 to give a perfect square? (14)What is the smallest number that must be subtracted from 510 to get a perfect square?

    (12)If the square root of 3 is 1.73, then find the square root of 1728. (13)Which is the smallest number that can be used to divide 133848 to give a perfect square? (14)What is the smallest number that must be subtracted from 510 to get a perfect square? The square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. Note that (−4) × (−4) = 16 too, so −4 is also a square root of 16. The symbol is √ which always means the positive square root

    The square root of a number is a value that, when multiplied by itself, gives the number. Example: 4 × 4 = 16, so a square root of 16 is 4. Note that (−4) × (−4) = 16 too, so −4 is also a square root of 16. The symbol is √ which always means the positive square root The square root sign is √ or √. √16 means the square root of 16. 4 x 4 = 16 The square root of 16 is 4. √16 = 4 Find the square root of the following numbers: 21) 4 26) 49 22) 9 27) 64 23) 16 28) 64 24) 25 29) 81 25) 36 30) 100 You may use a calculator for the following section! 31) Find which number, when multiplied by itself, gives 2809. 32) Find two consecutive numbers with a

    That is, the definition of the square root says that the square root will spit out only the positive root. On a side note, let me emphasize that "evaluating" an expression (to find its one value) and "solving" an equation (to find its one or more, or no, solutions) are two very different things. When finding the positive square root of an expression containing variables, you must be sure that the result is not negative. Consider that 5 2 = 25 and (-5) 2 = 25.

    A42 Appendix E: Absolute Value positive square root is denoted by √ a and the negative square root by − √ a. For example, the positive square root of 9 is √ 9 = 3, and the negative square root of 9 is − √ 9 =−3. Readers who may have been taught to write √ 9 as ±3 should stop doing so, since it is incorrect. Itisacommonerrortoreplace √ a2 bya The “square” operation x2 and “square root” operation x1/2 = x are examples of inverse functions of one another, for x 0. That is, the effect of applying of either one, followed immediately by the

    The square root and square are opposite operations, just like multiplication and division are opposite and addition and subtraction are opposites. Example: Write the related square and square root equations for 6 2 and 7 2 . number inside the square root is closest to and use that to make an estimate. This works well for square roots that This works well for square roots that are relatively close to a perfect square.

    There are two methods to simplify square root. Here is Method 1: 12 = 2 2⋅ ⋅ 3 = 2 3 1. First, we factor 12 into 2⋅2⋅3. You might need to go to MTH20 content and review how to build a factor tree for a number. 2. Next, since we have a pair of 2's inside the square root, we can take them out, and they become one 2 outside the square root symbol. 3. Since the 3 is alone inside the square Simplifying Radical Expressions. z. Radical: square roots and higher roots. z. Shorthand method of writing roots • Use fractional exponent • Not necessarily a fractional value of exponent

    4 A perfect square is a positive integer that has an exact square root; it is a rational number (more specifically, also a positive integer). Square roots of numbers that are not perfect squares are irrational numbers and therefore we must estimate these roots to a certain Squares and square roots Square roots - integers Find each square root. Round it to the nearest whole number. 7) 13) 39 81 34 296 8) 14) 24 197

    Investigation Triangle Triangle Triangle

    square and square root explained simply filetype pdf

    Squares Cubes - Square Root Chart - byrdmiddleschool.org. Quadratic and Square Root Functions Algebra II Square Roots & Quadratics: What’s the Connection? Page 11 Calculator Notes to Get Started ( Problem i) Key strokes to draw the inverse. You have to input Y 1 first. The calculator just plots the points for the inverse of the function in Y 1, SIMPLIFYING SQUARE R OOTS OF SQUARE R OOTS BY DENESTING 63 [Landau92b], reasons are giv en for preferring the left-hand side of (4.2). Ho w ev er, w e assume that in general users w ould w an t denesting to b e disco v ered 4. Another reason for denesting is r eliable simpli c ation.F or b oth p eople and computers, there is a danger that the result of a mathematical simpli cation will dep end.

    Binomial Square Explained tjleone.com

    square and square root explained simply filetype pdf

    Nested Square roots QC. square roots, a root that is negative, and a root that is positive. The number under the radical sign, The number under the radical sign, shown above, is only equal to 5. SIMPLIFYING SQUARE R OOTS OF SQUARE R OOTS BY DENESTING 63 [Landau92b], reasons are giv en for preferring the left-hand side of (4.2). Ho w ev er, w e assume that in general users w ould w an t denesting to b e disco v ered 4. Another reason for denesting is r eliable simpli c ation.F or b oth p eople and computers, there is a danger that the result of a mathematical simpli cation will dep end.

    square and square root explained simply filetype pdf


    Quadratic and Square Root Functions Algebra II Square Roots & Quadratics: What’s the Connection? Page 11 Calculator Notes to Get Started ( Problem i) Key strokes to draw the inverse. You have to input Y 1 first. The calculator just plots the points for the inverse of the function in Y 1 For this unit square, the inverse image of any number placed on a number line along a side of the square and outside the square, lies within the unit interval that defines the edge of the square. Fig. 3.

    square root and a cube root. Suggest students expand out radicand expressions , and have them circle triples when they are simplifying cube roots and circle pairs when simplifying square roots. Simplifying Radical Expressions. z. Radical: square roots and higher roots. z. Shorthand method of writing roots • Use fractional exponent • Not necessarily a fractional value of exponent

    SIMPLIFYING SQUARE R OOTS OF SQUARE R OOTS BY DENESTING 63 [Landau92b], reasons are giv en for preferring the left-hand side of (4.2). Ho w ev er, w e assume that in general users w ould w an t denesting to b e disco v ered 4. Another reason for denesting is r eliable simpli c ation.F or b oth p eople and computers, there is a danger that the result of a mathematical simpli cation will dep end An expression involving square roots is in simplest form if 1. There are no perfect-square factors in a radical. 2. No fraction appears inside a radical. 3. No radical appears in the denominator. Rules and Properties: Square Root Expressions in Simplest Form For instance, considering condition 1, is in simplest form because 17 has no perfect-square factors whereas is not in simplest form

    Memorize cubes and squares of numbers up to 35. Learn tricks to find squares and cubes of numbers greater than 35. Learn tricks to find cube roots and square roots of large number. In statistics and its applications, the root mean square (abbreviated RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers). The RMS is also known as the quadratic mean and is a particular case of the generalized mean with exponent 2.

    Square and Square Roots For more such worksheets visit www.edugain.com Answer the questions (1) The total population of a village is a perfect square. The number of men in the village is 18956, and the number of women in the village is 30684. If we know that the number of children in the village is also a perfect square and is more than 9400, then what is the smallest possible number of The “square” operation x2 and “square root” operation x1/2 = x are examples of inverse functions of one another, for x 0. That is, the effect of applying of either one, followed immediately by the

    Simplifying Radical Expressions. z. Radical: square roots and higher roots. z. Shorthand method of writing roots • Use fractional exponent • Not necessarily a fractional value of exponent Simplifying Square Roots Primary SOL A.3 The student will express the square roots and cube roots of whole numbers and the square root of a monomial algebraic expression in simplest radical form. Related SOL A.2, A.4 Materials Graphing calculators Vocabulary square root, perfect square, squaring (earlier grades) simplest radical form, radicand (A.3) Student/Teacher Actions (what …

    That is, the definition of the square root says that the square root will spit out only the positive root. On a side note, let me emphasize that "evaluating" an expression (to find its one value) and "solving" an equation (to find its one or more, or no, solutions) are two very different things. An expression involving square roots is in simplest form if 1. There are no perfect-square factors in a radical. 2. No fraction appears inside a radical. 3. No radical appears in the denominator. Rules and Properties: Square Root Expressions in Simplest Form For instance, considering condition 1, is in simplest form because 17 has no perfect-square factors whereas is not in simplest form

    The “square” operation x2 and “square root” operation x1/2 = x are examples of inverse functions of one another, for x 0. That is, the effect of applying of either one, followed immediately by the Triangle, Triangle, Triangle 3 Part 3 Create a summary of your work. Show all your calculations. Explain your thinking. Take It Further Draw an obtuse triangle on grid paper.

    4 A perfect square is a positive integer that has an exact square root; it is a rational number (more specifically, also a positive integer). Square roots of numbers that are not perfect squares are irrational numbers and therefore we must estimate these roots to a certain Indices (Powers) & Roots What do Powers/Indices mean?: 2 is ‘ to the power of 2‘ and means × (we usually say ‘ squared’) 3 is ‘ to the power of 3’ and means × × (we usually say ‘ cubed) 4 is ‘ to the power of 4’ and means × × × etc…. The superscript numbers (2, 3 & 4 above) are known as indices or powers. When the power is 2 we say “squared”, when the power is 3

    on the binomial square to show these units. To find the area of the binomial square, we could simply count the number of squares in the grid (there are eighty-one). The square root and square are opposite operations, just like multiplication and division are opposite and addition and subtraction are opposites. Example: Write the related square and square root equations for 6 2 and 7 2 .

    square and square root explained simply filetype pdf

    If you're asked to estimate the square root of a number that is not a perfect square (without the aid of a calculator) there are some simple steps you can take to find an answer. First, you can estimate to get as close as you can with the aid of two perfect square roots that the number is between. Next, divide the number you're trying to find the square root of by one of the perfect square An article and research paper describe a fast, seemingly magical way to compute the inverse square root (1/sqrt(x)), used in the game Quake. I'm no graphics expert, but appreciate why square roots are useful. The Pythagorean theorem computes distance between points, and dividing by distance helps