X mũ 2 8x 16 y mũ 2 July 8, 2019 16 32 64 128 (x ^ 2)/(x ^ 2 - 16) - (8(x - 2))/(x ^ 2 - 16) = (x - 4)/(x + 4) (x ^ 2 - 16)/(x ^ 2 - 8x + 16)
