2x 2 7x 3 x 2 9 1 July 8, 2019 16 32 64 128 3 2x 2 )- x 3x 2 7x 1 )- 5x 9 (- 8x 3 7x 2 x 9 )+( 5x 3 3x 2 2x 1 2x 7 2x 9
