5m 4 3 m 2 July 8, 2019 16 32 64 128 M 2 5m 4 )( m 2 7m 3 5m 3 4 3m 2 5 m 6 7 3 m 4 )+ 5m =- 20 4 3 5m 6 5 m 2 7m 4 m 3 )= 5m 6 2m 1 3 m 2 )= 5m 4 2m 1 2m 4 5m 2 )( m 3 7m 3 m 6 )+ 2 4 5m M 3 5m 2 4 0