# How do you simplify -(m^4)^3?

$- {m}^{12}$
Remember that ${\left({a}^{b}\right)}^{c} = {a}^{b \cdot c}$
Therefore, $- {\left({m}^{4}\right)}^{3} = - {m}^{4 \cdot 3} = - {m}^{12}$