X+1/x^2-x + x+2/1-x^2

b) x+1/x^2-x + x+2/1-x^2
c) 2x+1/4x-2 + 1-2x/4x+2 - 2/1-4x^2
d)3x-y/x-5 - 2x-3y/2y+5