## Precalculus: Mathematics for Calculus, 7th Edition

a) $625$ b) $25$ c) $64$
a) $5^{3}$ $\times$ $5$ = $5^{3+1}$ = $5^{4}$ = $625$ b) $5^{4}$ $\times$ $5^{-2}$ = $5^{4-2}$ = $5^{2}$ = $25$ c) $($$2$$^{2}$)$^{3}$ = $2^{2\times3}$ = $2^{6}$ = $64$