Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Prerequisites - Review Exercises - Page 64: 84

Answer

$9(2x+3)(2x-3)$

Work Step by Step

$36x^2-81=9(4x^2)-9(9)=9(4x^2-9)=9[(2x)^2-3^2]=9(2x+3)(2x-3)$
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