Question

задание под номером 8 с решением

Answer 1

1)(x+3y)/(x-y)-y/x=(x²+3xy-xy+y²)/[x(x-y)]=(x²+2xy+y²)/[x(x-y)]=(x+y)²/[x(x-y)]
2)(y-x)/(y+x)*(x+y)²/[x(x-y)]=-(x+y)/x