Answer
$-5(3x^2-4)$
Work Step by Step
Factoring the negative $GCF=
-5
,$ the given expression, $
-15x^2+20
,$ is equivalent to
\begin{array}{l}\require{cancel}
-5
\left(
\dfrac{-15x^2}{-5}+\dfrac{20}{-5}
\right)
\\\\=
-5(3x^2-4)
.\end{array}
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 - Section 6.1 - The Greatest Common Factor and Factoring by Grouping - Exercise Set - Page 427: 50
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