Answer
$a-9$
Work Step by Step
$(\sqrt a-3)(\sqrt a+3)$
=$(\sqrt a)^{2}-(3)^{2}$
=$a-9$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Review - Page 748: 99
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.
