0 =( x 4 2 9 July 8, 2019 16 32 64 128 0 x 4 9x 2 0 x 4 10x 2 9 0 x 4 8x 2 9 X 4 9x 2 20 0 X 4 x 2 90 0 X 4 9x 2 8 0 X 4 6x 2 9 0 X 4 10x 2 9 0 quadratic formula X 4 9x 2 14 0 X 4 9x 2 18 0 0 3 x 2 )- 0 2 x 4 )=- 2 9 X 4 5x 2 9 0 X 4 3x 2 9 0 X 4 2x 2 9 0 X 4 8 2 9 0