Answer
$x=3$ or $x=-3$.
Work Step by Step
$x^2=9\\x^2-9=0\\x^2+3x-3x-9=0\\x(x+3)-3(x+3)\\(x+3)(x-3)=0$
Thus $x=3$ or $x=-3$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set - Page 572: 148
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
