4x 2 x 1 4x 3 July 8, 2019 16 32 64 128 4x 2 x 1 =- 3x 2 2x 1 )= 4x 3 4x 2 =( 2x 1 )( 3x 5 2 x 1 )- 3 4x 7 4x 3 4x 2 x 1 0 4x 3 2 x 1 5 4x
