(-2m^2n^2)^3+8(m^2)^3(-m^2)(-n)^3

问题描述:

(-2m^2n^2)^3+8(m^2)^3(-m^2)(-n)^3

(-2n^2)^3+8(m^2)^3(-m^2)(-n)^3
=-8m^6n^6+8m^6m^2n^3
=-8m^6n^3(n^3-m^2)