Answer
$-10z^{8}$
Work Step by Step
Using the laws of exponents, the given expression, $
(5z^3)(-2z^5)
,$ simplifies to
\begin{array}{l}\require{cancel}
5(-2)z^{3+5}
\\\\=
-10z^{8}
.\end{array}
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Review Exercises - Page 76: 89
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