Answer
a.
$-2^{6}$ = -64
b.
$(-2)^{6}$ = 64
c.
$(\frac{1}{5})^{2}.(-3^{3})$ = $-\frac{27}{25}$
Work Step by Step
a.
$-2^{6}$ = -($2\times2\times2\times2\times2\times2$) = -64
b.
$(-2)^{6}$ = $(-2)\times(-2)\times(-2)\times(-2)\times(-2)\times(-2)$) = 64
c.
$(\frac{1}{5})^{2}.(-3^{3})$ = $\frac{1}{5}\times\frac{1}{5}\times(-3)\times(-3)\times(-3)$) = $-\frac{27}{25}$