Answer
$9w^{2}$-49
Work Step by Step
You are given (3w+7)(3w-7).Multiple each term in the parentheses with the terms in the other parentheses:
3w*3w=$9w^{2}$
3w*-7=-21w
7*3w=21w
7+-7=-49
$9^{2}$$w^{2}$-21w+21w-49
=$9w^{2}$-49
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - 8-5 Factoring x2+bx+c - Practice and Problem-Solving Exercises - Page 517: 67
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