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