Answer
$x=\pm3$
Work Step by Step
Taking the square root of both sides (Square Root Property), the solutions to the given equation are
\begin{array}{l}\require{cancel}
x^2=9
\\\\
x=\pm\sqrt{9}
\\\\
x=\pm3
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter R - Elementary Algebra Review - R.5 Polynomials and Factoring - R.5 Exercise Set - Page 970: 35
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