Срочно !!!! Помогите ,
Надо упростить
[(2x+2y)/y]÷(y²-x²)/5y² - 10x/(y-x)=2(x+y)·5y²/y(x-y)(x+y) + 10y/(x-y) = =сокращаем = 10y/(x-y)+10y/(x-y)=20y/(x-y)