Question

Помогите с многочленами

Answer 1

1)=x^2y+xy^2-x^3+2x^2y-xy^2+2y^3=3x^2y-x^3+2y^3

2)=35c^2+25cp-49pc-35p^2-35c^2-49cp+25cp+35p^2=-48pc

3)=x^5-2yx^3+2yx^2-4y^2-x^5+2yx^2-2yx^3+4y^2=4yx^2-4yx^3