Answer
$= 5[(2a - 3b)(2a+3b)]$
Work Step by Step
$20a^{2} - 45b^{2}$
$= 5(4a^{2} - 9b^{2)}$
$= 5[(2a - 3b)(2a+3b)]$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 1-9 - Cumulative Review - Page 763: 71
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