9 2x 6 x 4x 1 July 8, 2019 16 32 64 128 9 2x 6 )-( x 3 )= 4x 18 8 x 9 )= 6 2x 12 )- 4x 4x 6 2x 9 x 18 2x 9 9 x 6 / 2 9 6x-x2
