Answer
Answer D
Work Step by Step
$30z^3-12z^2+120z-48$
Factor out the GCF
$=30z(z^2+4)-12(z^2+4)$
Factor by grouping
$=(z^2+4)(30z-12)$
$=6(z^2+4)(5z-2)$
The correct answer is D.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - 8-8 Factoring by Grouping - Practice and Problem-Solving Exercises - Page 533: 47
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