I. (2 - x)/(x^2 - 4) = 1/(x + 2) II. (x^2 + 4x)/(x^2 - 16)

I. (2 - x)/(x^2 - 4) = 1/(x + 2) II. (x^2 + 4x)/(x^2 - 16) = 1/(x - 4) III. (x^2 + x - 6)/(2x^2 + 6x) = (x + 1)/(x + 2) IV. (x^2 - 1)/(x^2 + x - 2) = (x + 1)/(x + 2) Pernyataan di atas yang benar adalah ....