12x 1 3x 1 1 6x 2 July 8, 2019 16 32 64 128 12x 1 )( 3x 1 )-( 6x 2 2 10 1 12x 3x 1 2 6x 4 4x 3x 1 12x )-( 6x 1 )( 6x 1 )= 2 5x