1 6x 2 0 July 8, 2019 16 32 64 128 1 16x 2 0 1 6x 9x 2 0 3x 1 6x 2 0 1 6x x 2 0 1 8x 16x 2 0 1 6x 2 5 6 0 1 16x 2 x 4 0 2x 16x 1 2 0 15x 1 )( 6x 1 2 )= 0 6x 2 5x 1 0 6x 2 2x 1 0 6x 2 7x 1 0 6x 2 12x 1 0 6x 2 8x 1 0 6x 2 4x 1 0