Answer
$12a^{2b+2}-28a^b$
Work Step by Step
Using the Distributive Property, then,
\begin{array}{l}
4a^b(3a^{b+2}-7)
\\=
12a^{b+b+2}-28a^b
\\=
12a^{2b+2}-28a^b
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Review - Page 330: 77
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