Question

The sum of -8m²n and 4nm² is:​

Answer 1

$\rm{-8m^{2} n+4nm^{2}=-8m^{2}n+4m^{2}n}$

$\longrightarrow\rm{-8m^{2} n+4nm^{2}=(-8+4)m^{2}n=-4m^2n}$