Answer
$(x-3)(x+3)$
Work Step by Step
The given expression can be written as:
$x^2-3^2$
RECALL:
$a^2-b^2=(a-b)(a+b)$
Use the formula above with $a=x$ and $b=3$ to obtain:
$=(x-3)(x+3)$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.5 - Factoring Polynomials - R.5 Exercises - Page 58: 80
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