Answer
$\color{blue}{(5a-3)(2b+7)}$
Work Step by Step
Regroup:
$=(10ab-6b)+(35a-21)$
Factor out $2b$ in the first and $7$ in the second group to obtain:
$=2b(5a-3)+7(5a-3)$
Factor out $5a-3$ to obtain:
$=\color{blue}{(5a-3)(2b+7)}$
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 - R.4 Factoring Polynomials - R.4 Exercises - Page 43: 30
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