Algebra: A Combined Approach (4th Edition)

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

Chapter 7 - Cumulative Review: 37

Answer

Answer: (x + 3)(x - 3)

Work Step by Step

$x^{2} - 9$ Compare the give expression with the generalized form: $a^{2} - b^{2}$ = (a + b)(a - b). Here, a = x and b = 3. Thus, $x^{2} - 9$ = (x + 3)(x - 3)
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