Answer
$(x-3)^{2}(x+3)$
Work Step by Step
Factor in pairs, $ x^{2}$ from the first two, $-3$ from the other pair.
$=x^{2}(x-3)-9(x-3)$
$=(x-3)(x^{2}-9)$
We recognize a difference of squares:
$=(x-3)\cdot(x-3)(x+3)$
$=(x-3)^{2}(x+3)$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Review Exercises - Page 143: 96
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