1.(1)(x^2y-xy^2)÷(x-y)=_________.3.(2)(3x^3y^2+6x^2y^3)÷(x+2y)(3)(-9m^2+4n^2)÷(3m+2n)

问题描述:

1.(1)(x^2y-xy^2)÷(x-y)=_________.
3.(2)(3x^3y^2+6x^2y^3)÷(x+2y)
(3)(-9m^2+4n^2)÷(3m+2n)

1.xy 2.3x^2y^2 3.2n-3m