| 5.5x² + 16.5x - 99 = 0 x1 = -6 , x2 = 3 | 2x² + 14x - 36 = 0 x1 = -9 , x2 = 2 |
| -2.5x² + 17.5x = 0 x1 = 0 , x2 = 7 | 2.5x² + 5x - 60 = 0 x1 = -6 , x2 = 4 |
| 2.5x² + 27.5x + 75 = 0 x1 = -6 , x2 = -5 | 4x² + 36x + 80 = 0 x1 = -5 , x2 = -4 |
| -0.5x² - 2x + 22.5 = 0 x1 = -9 , x2 = 5 | 1.5x² - 6x + 4.5 = 0 x1 = 1 , x2 = 3 |
| 1.5x² + 1.5x - 108 = 0 x1 = -9 , x2 = 8 | -9.5x² - 9.5x = 0 x1 = -1 , x2 = 0 |
| -10x² - 10x + 20 = 0 x1 = -2 , x2 = 1 | 2.5x² - 27.5x + 70 = 0 x1 = 4 , x2 = 7 |
| -x² - 8x + 20 = 0 x1 = -10 , x2 = 2 | 5x² + 5x - 30 = 0 x1 = -3 , x2 = 2 |
| 10x² + 80x - 90 = 0 x1 = -9 , x2 = 1 | x² - 8x + 12 = 0 x1 = 2 , x2 = 6 |
| 2x² - 18x + 16 = 0 x1 = 1 , x2 = 8 | 9x² - 54x - 360 = 0 x1 = -4 , x2 = 10 |
| 9.5x² + 76x - 190 = 0 x1 = -10 , x2 = 2 | 4x² - 16x - 48 = 0 x1 = -2 , x2 = 6 |