Question

помогите, пожалуйста, упростить выражение 3/x+y + 5/x-y

Answer 1

3/х+5/х=8/х
у-у=0
т.е =8/х

Answer 2

3/(x+y)+5/(x-y)=(3(x-y)+5(x+y))/(x²-y²)=(3x-3y+5x+5y)/(x²-y²)=
=(8x+2y)/(x²-y²)=2(4x+y)/(x²-y²)..