Answer
$3y(y+10)(y-10)$
Work Step by Step
$ 3y^{3}-300y\qquad$..factor out $3y$.
$=3y(y^{2}-100)\qquad$..Recognize $A^{2}-B^{2}$ in the parentheses:
$=3y(y+10)(y-10)$
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 11 - Quadratic Functions and Equations - 11.1 Quadratic Equations - 11.1 Exercise Set - Page 707: 85
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