Answer
$9a^2(a^2+9)$
Work Step by Step
Factoring out the greatest common factor of $9a^{2}$, the given expression, $
9a^4+81a^2
,$ is equivalent to
\begin{array}{l}\require{cancel}
9a^2(a^2+9)
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 6 - Factoring, Solving Equations, and Problem Solving - 6.2 - Factoring the Difference of Two Squares - Problem Set 6.2 - Page 248: 28
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