Answer
$3z(1-7xz^3)$
Work Step by Step
Factoring the $GCF=
3z$, then,
\begin{align*}
3z-21xz^4
\Rightarrow
3z(1-7xz^3)
.\end{align*}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.5 - The Greatest Common Factor and Factoring by Grouping - Exercise Set - Page 294: 12
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