2 2x 1 9 July 8, 2019 16 32 64 128 2 2x 1 9.2 x 4 0 2x 2 1 9x X 2 2x 1 9 2 2x 1 )+ 3x 9 9x 2 2x 1 9 6x 2 2x 9 1 3x 2 2x 1 10 9 X 2 3 2x 1 9 2 3x 1 )-( 9 2x )= 25 (- 2x 1 )( x 2 9x 3 2x 2 9x 1 0 X 2 2x 1 )- 9 0 0 2 2x 9 1 2x 1 2 9x2 0 2x 1 2 9x2