X 2 2x 1 3x 7 0 July 8, 2019 16 32 64 128 0 3x x 4 )+ 1 2x 2 7 0 X 2 )( 2x 1 )( 3x 7 ≥ 0 2x 3 )( 6x 1 )( 3x 2 )( x 12 )- 7 0