Question

Упростите выражение                ху(х + у) – (х2 + у2)(х – 2у).

Answer 1

xy(x+y)-(x²+y²)(x-2y)=x²y+y²x-x³-y²x+2x²y+2y³=-x³+2y³+3x²y

Answer 2

Х^2+ху^2-х^3+2х^2у-ху^2+2у^3
3х^2у-х^3+2у^3