M 1 x 2 2 m 2 x m 3 0 July 8, 2019 16 32 64 128 Cho pt x 2 2 m 1 x m 2 3 0 Fie ecuatia m 3 x 2 2 m 1 x m 2 0 X 2 2 m 1 x m 2 2m 3 0 X 2 2 m 1 x m 2 3 0 M 1 x 2 2 m 2 x m 3 0 có nghiệm X 2 2 m 1 x m 2 4m 3 0 M + 1 x 2 + 2(m 2 x + m 3 = 0 vô nghiệm) 3 x 2 2 m 2 x 5 m 1 0 M/(1 - m ^ 2) + 1/(1 + m) M(-1 2 1)
