Answer
$(7x-8)^2(121-56x)$
Work Step by Step
Take out the common factor $(7x-8)^2$, we have $(5-2x)(3)(7x-8)^2(7)+(7x-8)^3(-2)=(7x-8)^2(21(5-2x)-2(7x-8))=(7x-8)^2(105-42x-14x+16)=(7x-8)^2(121-56x)$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - Chapter R Test Prep - Review Exercises - Page 83: 76
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