(-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
答
(-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)