# How do you multiply (-5g^4h^9)^7?

${\left(- 5 {g}^{4} {h}^{9}\right)}^{7} = {\left(- 1\right)}^{7} \cdot {5}^{7} \cdot {\left({g}^{4}\right)}^{7} \cdot {\left({h}^{9}\right)}^{7}$
$= - 1 \cdot 78125 \cdot {g}^{4 \cdot 7} \cdot {h}^{9 \cdot 7}$
$= - 78125 {g}^{28} {h}^{63}$