Answer
$25n^{14}$
Work Step by Step
Using $(ab)^x=a^xb^x$, then the expression, $
(-5n^7)^{2}
$, simplifies to
\begin{array}{l}\require{cancel}
(-5)^2n^{7(2)}
\\\\=
25n^{14}
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.1 Exponents and Their Properties - 4.1 Exercise Set - Page 236: 67
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