#### Answer

$3^2n^2$

#### Work Step by Step

$a^m \cdot a^n = a^{m+n}$
Use the rule above to obtain:
$(3n)^2=3n \cdot 3n = (3 \cdot 3)(n \cdot n) = 3^2n^2$

Published by
Prentice Hall

ISBN 10:
0133500403

ISBN 13:
978-0-13350-040-0

$3^2n^2$

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