х+2/(2х-4) - 3х-2/х^2-2х

(x+2)/2(x-2)-(3x-2)/x(x-2)=((x+2)*x-2(3x-2))/2x(x-2)=(x^2+2x-6x+4)/2x(x-2)=(x-2)^2/2x(x-2)=(x-2)/2x