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Unformatted text preview: Chapter 11 Quadratic Equations and Functions 11.1 Solving Quadratic Equations by Completing the Square MartinGay, Beginning and Intermediate Algebra, 4ed 3 Square Root Property We previously have used factoring to solve quadratic equations. This chapter will introduce additional methods for solving quadratic equations. Square Root Property If b is a real number and a 2 = b , then . a b = MartinGay, Beginning and Intermediate Algebra, 4ed 4 Solve x 2 = 49 2 = x Solve ( y 3) 2 = 4 Solve 2 x 2 = 4 x 2 = 2 7 49 = = x y = 3 2 y = 1 or 5 2 4 3 = = y Square Root Property Example: MartinGay, Beginning and Intermediate Algebra, 4ed 5 Solve x 2 + 4 = 0 Square Root Property Example: 4 x =  2 x i = 2 4 x =  MartinGay, Beginning and Intermediate Algebra, 4ed 6 Solve ( x + 2) 2 = 25 x =  2 5 x =  2 + 5 or x =  2 5 x = 3 or x =  7 5 25 2 = = + x Square Root Property Example: MartinGay, Beginning and Intermediate Algebra, 4ed 7 Solve (3 x 17) 2 = 28 7 2 17 3 = x 3 7 2 17 = x 7 2 28 = 3 x 17 = Square Root Property Example: MartinGay,...
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 Fall '10
 Alraban
 Math, Factoring, Addition, Equations

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