Algebra: A Combined Approach (4th Edition)

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

Chapter 10 - Review: 99

Answer

$a-9$

Work Step by Step

$(\sqrt a-3)(\sqrt a+3)$ =$(\sqrt a)^{2}-(3)^{2}$ =$a-9$
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