Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 5 - Section 5.6 - Factoring Trinomials - Exercise Set - Page 304: 89



Work Step by Step

Using $ (a-b)(a+b)=a^2-b^2 $, then, \begin{align*} (x-3)(x+3) \Rightarrow x^2-3^2 \\= x^2-9 .\end{align*}
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