Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - Cumulative Test for Chapters P-2 - Page 236: 22



Work Step by Step

$\frac{1}{2}x^2-7=25$ $\frac{1}{2}x^2=25+7=32$ $x^2=\frac{32}{\frac{1}{2}}=32·\frac{2}{1}=64$ $x=±\sqrt {64}$ $x=±8$
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