Алгебра 7 класс

1. (x^2/y^3+x/y^2) :(y^2/x^2+y/x) = (x/y^2 * (x/y + 1)) : (y/x * (y/x + 1))
2. (x/y^2 * (x/y + 1)) * (x/y * (x/y^2 + 1)) = x(x/y + 1) * x/y * (1/y^2 + 1) = x(x^2 + y^2) / y^3Ответx: (x^2 + y^2) / y^3