Detta blir stökigt. 2/(x^2-4) + 1/(2x-x^2) = 2/(x+2)(x-2) + 1/x(2-x) = 2/(x+2)(x-2) - 1/x(x-2) = 2x/x(x+2)(x-2) - 1*(x+2)/(x+2)x(x-2) = (2x-x-2)/x(x+2)(x-2) = (x-2)/x(x+2)(x-2) = 1/x(x+2)