Question

Упростить: (m(3m-2n)-m(3n-2m))n

Answer 1

(3m^2-2nm-3nm+2m^2)n=3nm^2-2mn^2-3mn^2+2nm^2=5nm^2-5mn^2=5mn(m-n)

Answer 2

$(m(3m-2n)-m(3n-2m))n=n(3m^{2}-2mn-3mn+2m^{2})=n((3m^{2}+2m^{2})+(-2mn-3mn))=n(5m^{2}-5mn)=5m^{2}n-5mn^{2}=5mn(m-n)$