Answer
$6561$
Work Step by Step
The given expression is
$=(-9)^2\cdot(-9)^2$
Use $a^n\cdot a^m=a^{n+m}$.
$=(-9)^{2+2}$
Simplify.
$=(-9)^{4}$
Use $(-9)^4=6561$.
$=6561$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 6 - Exponential Functions and Sequences - 6.1 - Properties of Exponents - Exercises - Page 296: 25
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