Answer
$9x^2-4$
Work Step by Step
$$(3x+2)(3x-2)$$ $$=(3x\times 3x)+(3x\times (-2))+(2\times 3x)+(2\times (-2))$$ $$9x^2-6x+6x-4$$ $$9x^2-4$$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.4 - Page 61: 33
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