Answer
$81b^2$
Work Step by Step
Apply the exponent to each coefficient and each variable.
$(9b)^2=81b^2$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Review - Page 727: 19
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