Answer
$-4x^{3}(5x^{4}-9)$
Work Step by Step
$-20x^{7}+36x^{3}\qquad$...factor out the common term, $-4x^{3}$
$=-4x^{3}(5x^{4}-9)$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 6 - Review Exercises - Page 479: 53
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