Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 4 - Quadratic Functions - 4.4 Solving Quadratic Equations by the Square Root Property and Completing the Square - 4.4 Exercises: 7

Answer

$x=-2,12$

Work Step by Step

When taking the square root of a number, you get a positive and a negative answer. $(x-5)^2=49$ $x-5=7$ $x=12$ or $x-5=-7$ $x=-2$. So $x=-2,12$
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