Algebra: A Combined Approach (4th Edition)

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

Chapter 6 - Section 6.5 - Factoring by Special Products - Exercise Set: 52

Answer

(x-3+y)(x-3-y)

Work Step by Step

$x^{2}$-18x+81-$y^{2}$=($x^{2}$-2*x*9+$9^{2}$)-$y^{2}$= $(x-3)^{2}$-$y^{2}$=(x-3+y)(x-3-y)
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