计算1.(-2a^2·b)^2(ab^2-a^2·b+a^3)1.(-2a^2·b)^2(ab^2-a^2·b+a^3) 2.x(x^2+xy+y^2)-y(x^2+xy+y^2)+3xy(y+x)3.(2m-n)(4m^2-2mn+3n^2)
问题描述:
计算1.(-2a^2·b)^2(ab^2-a^2·b+a^3)
1.(-2a^2·b)^2(ab^2-a^2·b+a^3)
2.x(x^2+xy+y^2)-y(x^2+xy+y^2)+3xy(y+x)
3.(2m-n)(4m^2-2mn+3n^2)
答
1.(-2a^2·b)^2(ab^2-a^2·b+a^3) =4a^4b^2(b^2-ab+a^2)a=4a^5b^4-4a^6b^3+4a^7b^22.x(x^2+xy+y^2)-y(x^2+xy+y^2)+3xy(y+x)=x^3+x^2y+xy^2-yx^2-xy^2-y^3+3xy^2+3x^2y=x^3+3x^2y+3xy^2-y^33.(2m-n)(4m^2-2mn+3n...