X 2 2 m 1 x m 2 2m 5 0 July 8, 2019 16 32 64 128 Cho pt x 2 2 m 1 x m 2 2m 5 0 (2 + m) ^ 2 * (2 - m) ^ 2 ((m - 2)/(m + 2) - (m + 2)/(m - 2)) / ((8m)/(m ^ 2 - 4))