M 2 m 4 0 July 8, 2019 16 32 64 128 2 m 2 m 1 4 0 X2 m 2 x 2m 4 0 X 2 m 2 x m 4 0 M 2 2m 4 0 M 3 m 2 4 0 M 2 4 0 roots X 2 2mx m 2 2m 4 0 M 1 x 2 2mx m 4 0 M 3 m 2 4m 4 0 2 4 m2
