Wykonaj mnozenie i zredukuj wyrazy podobne zadanie 2

(3x+y)(2y+x)= 6xy+3x^2+2y^2+xy= 7xy+ 3x^2 + 2y^2 (4+ xy)(x+y)= 4x+4y+ x^2y + xy^2 (x^2+ y^2)(x+y+xy) = x^3+x^2y+x^3y + xy^2+ y^3+xy^3 (x^3+ x^2 + x) (x-y)= x^4 - x^3y+ x^3 - x^2y+x^2 -xy=x^9-  x^3y - x^2y- xy

a)(3x+y)(2y+x)= 6xy+3x^2+2y^2+xy= 7xy+ 3x^2 + 2y^2 b)(4+ xy)(x+y)= 4x+4y+ x^2y + xy^2 c)(x^2+ y^2)(x+y+xy) = x^3+x^2y+x^3y + xy^2+ y^3+xy^3 d)(x^3+ x^2 + x) (x-y)= x^4 - x^3y+ x^3 - x^2y+x^2 -xy=x^9-  x^3y - x^2y- xy