3x-2/x+1/2-x=4x^2+x-4/2x 3x+/x^+(-2)x=x^3+4/x^2 4x^2+x-4/2x=x^3+4/x^2 2x-2/x+1/2=x+4/x^2 x-2/x-4/x^2+1/2=0