Question

помогите ето важно помогите!!!!!!!!​

Answer 1

$m^{7}=-1\Rightarrow m=-1\\n^{3} =-\frac{1}{8}\Rightarrow n=-\frac{1}{2}\\\\8m^{3}n^{2}=8*(-1)^{3}*(-\frac{1}{2})^{2}=8*(-1)*\frac{1}{4}=-2\\\\Otvet:\boxed{-2}$