Answer
$-24m^{5}$
Work Step by Step
We are given the expression $-8m^{3}(3m^{2})$. We can group like terms and then simplify.
$-8\times3\times m^{3} \times m^{2}$
Next, we can use the product rule for exponents to multiply the exponents.
$-24\times m^{3+2}=-24m^{5}$