Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 6 - Review: 33

Answer

(x-9)(x+9)

Work Step by Step

$x^{2}$-81=$x^{2}$-$9^{2}$=(x-9)(x+9)(
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