M 2 3 7 9 July 8, 2019 16 32 64 128 M 2 9 passes through 3 7 M 9 2 3 7 3 answer 9m 6m 7 2 m 3 M 9 2 3 7 3 solve for m 2 3 m 7 ) 1 4 m 9 2 7 9+ 2 3 m 7n Cho 4 điểm m(2 -3 5)n(4 7 -9 M 2 9 (m - 3) ^ 2 M^3 + 27