Answer
$x=±8$
Work Step by Step
$\frac{1}{2}x^2-7=25$
$\frac{1}{2}x^2=25+7=32$
$x^2=\frac{32}{\frac{1}{2}}=32·\frac{2}{1}=64$
$x=±\sqrt {64}$
$x=±8$
Algebra and Trigonometry 10th Edition
by Larson, Ron
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
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