Answer
$4a^2-9$
Work Step by Step
$(2a+3)(2a-3)=2a\cdot 2a-3\cdot 2a+2a\cdot 3-3\cdot 3=4a^2-9$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Section 10.3 - Multiplying Polynomials - Exercise Set - Page 717: 25
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