#### Answer

a. $5^{3}$
b. $5^{1+2}$

#### Work Step by Step

The expression uses the exponents law for adding the exponents when the base is the same.
$5^{1}$ $\times$ $5^{2}$ = $5^{1+2}$ = $5^{3}$

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Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

a. $5^{3}$
b. $5^{1+2}$

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