Answer
$(x+9+y)(x+9-y)$
Work Step by Step
Recognize a complete square in the first three terms, $(x+9)^{2}=x^{2}+18x+81$
Problem = $(x+9)^{2}-y^{2}$
This becomes a difference of squares,
$=(x+9+y)(x+9-y)$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Review Exercises - Page 143: 105
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
