Answer
$(x-y+9)(x+y+9)$
Work Step by Step
Given:$x^2+18x+8-y^2$
Since, $a^2-2ab+b^2=(a-b)^2$
Thus,
$=(x)^2-2(9)(1x)+(9)^2-y^2$
or, $=(x+9)^2-y^2$
Since, $a^2-b^2=(a-b)(a+b)$
Hence, $(x-y+9)(x+y+9)$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Review Exercises - Page 400: 61
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