Answer
$(5r-8t)(5r+8t)$
Work Step by Step
Use the differenvce of two squares formula $a^2-b^2=(a-b)(a+b)$:
$25r^2-64t^2$
=$5^2r^2-8^2t^2$
=$(5r)^2-(8t)^2$
=$(5r-8t)(5r+8t)$
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 1-6 - Cumulative Review - Page 549: 61
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