Question

упростить (x^-2xy+y^)(x-y) и (x-5)(2x+3)-2x(x-3)+x+7

Answer 1

(x^-2xy+y^)(x-y) = (x+y)^ • (x-y) = (x+y)(x-y)(x+y) = (x^-y^)(x+y)
второе лень :)