Answer
$63=(21)(3)$
Work Step by Step
$(2^{5}+2^{4})+(2^{3}+2^{2})+(2^{1}+2^{0})$
...factor each expression by grouping.
$=2^{4}(2^{1}+2^{0})+2^{2}(2^{1}+2^{0})+2^{0}(2^{1}+2^{0})$
...use the Distributive Property.
$=(2^{4}+2^{2}+2^{0})(2^{1}+2^{0})$
...simplify the powers of 2.
$=(16+4+1)(2+1)$
...simplify.
$=(21)(3)$
