2x 1 9x 6 July 8, 2019 16 32 64 128 6x 2x 1 9x 2 2 x 3 2x 1 )= 9x 6 2x 40 9x 1 6 x 11 6 2x 1 )= 9x 4 2x 3 x 1 9x 2 6x 2x 2 9x 2 )-( 1 6x 2x 1 5x 6x 2 9x 2 1 3 9x 6 )+ 2x 18 2x 9