Answer
$z^{2}$
Work Step by Step
The given expression is
$=z^{-2}\cdot 2^{4}$
Use $a^n\cdot a^m=a^{n+m}$
$=z^{-2+4}$
Simplify.
$=z^{2}$
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 - Chapter Test - Page 351: 4
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