201754 square roots.notebook May 04, 2017 Today is Thursday 5/4/17 Do Now: -Take calculator -Copy down HW -Square Roots W.S. Warm Up: Complete the table of perfect squares. 2 x x x 1 1 11 2 4 12 3 13 4 14 5 15 6 16 7 8 17 18 9 19 10 20 x 2 201754 square roots.notebook May 04, 2017 Today's Objective: Square Roots The Square Root of a number is a value that, when multiplied by itself, gives the number. radical √x radicand 201754 square roots.notebook May 04, 2017 Every positive number has 2 square roots. One negative and one positive 4 x 4 = 16 -4 x -4 = 16 √16 =±4 The positive square root is called the principal square root. Find the principal square root of each number. √49 =? √121 √100 = ? =? 201754 square roots.notebook May 04, 2017 Finding the Square Roots of Fractions: √ 1 __ 25 Find the Square Root of the numerator and denominator. √ 4 __ 25 √ 81 ___ = 121 Using Square Roots to Solve Equations x2 = 144 x2 - 18 = 82 201754 square roots.notebook The foyer of Ann's house is a square with an area of 36 square feet. What is the length of each side of the foyer? A chessboard has 32 black squares and 32 white squares arranged in a square. How many squares are along each side of the chessboard? May 04, 2017 201754 square roots.notebook May 04, 2017 Square Roots: Addition and Subtraction √ √16 + 169 Take the square root of each number, then evaluate the expression. Practice! √225 - √100 √400 + 2√144 √(37 + 12) Hint: Take the square root first 201754 square roots.notebook Evaluate each expression. a. b. c. May 04, 2017

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