Answer
$-7xy^{15}z^{9}$
Work Step by Step
Using laws of exponents, then,
\begin{array}{l}
(7y^4z^4)(-xy^{11}z^5)
\\=
-7xy^{4+11}z^{4+5}
\\=
-7xy^{15}z^{9}
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Cumulative Review - Page 334: 43b
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