Answer
See the explanation
Work Step by Step
The product rule for exponent states that: When multiplying exponential expressions with the same base, add the exponents. Use this sum as the exponent of the common base.
$b^m\times b^n=(b\times b\times ...\times b)(b\times b\times ...\times b)$
$=b\times b\times ...\times b$
$=b^{m+n}$
For example,
$2^3\times2^5=2^{3+5}=2^8$