Помогите решить.
1) xy(x+y)-(x^2+y^2)(x-2y)
2) xy(x+y)-(x^2+y)(2x-y)
Помогите срочно
1) xy(x+y)-(x^2+y^2)(x-2y)
2) xy(x+y)-(x^2+y)(2x-y)
Помогите срочно
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Answers & Comments
3х²у-х³+2у³
ху(х+у) -(х²+у)(2х-у)= х²у+ху²-(2х³-х²у+2ху-у²)=х²у+ху²-2х³+х²у-2ху+у²=
2х²у+ху²-2х³-2ху+у²