4 2 9x 1 July 8, 2019 16 32 64 128 4 2 9x 11 2 4 9x =- 12 X 4 9x 2 14 3x 4 )( 9x 2 12x 16 X 4 9x 2 18 X 4 9x 2 14 0 X 4 9x 2 18 0 X 4 9x 2 10 3x 4 9x 2 12 0 81x 4 9x 2 1 4 2 9x 3 5 14 X 4 29x 2 100 4 1x 2 9x 7 5 7 98 4 9x 2 4 3x 1 9x 2 12x 4 0 discriminant