Answer
$x=\pm3$ or $x=\pm3i$
Work Step by Step
If $|x^2|=9$, then $x^2=9\\x=\pm3$ or $x^2=-9\\x=\pm3i$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 12 - Sequences; Induction; the Binomial Theorem - Chapter Review - Cumulative Review - Page 840: 1
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