X 2 3x 2 5x 6 21 July 8, 2019 16 32 64 128 X 2 3x 4 5x 6 21 X 2 3x 4 5x 6 210 X 2 3x 4 5x 6 21 solution 6 x 2 1 )-( 2x 4 )( 3x 2 3 5x 21
