| 0.5x² - 4x - 10 = 0 x1 = -2 , x2 = 10 | 7.5x² - 22.5x - 210 = 0 x1 = -4 , x2 = 7 |
| x² + x - 20 = 0 x1 = -5 , x2 = 4 | 0.5x² - 2x - 10.5 = 0 x1 = -3 , x2 = 7 |
| -0.5x² + 1.5x + 14 = 0 x1 = -4 , x2 = 7 | -4x² - 24x - 20 = 0 x1 = -5 , x2 = -1 |
| -1.5x² - 19.5x - 63 = 0 x1 = -7 , x2 = -6 | 4x² + 24x = 0 x1 = -6 , x2 = 0 |
| 4.5x² + 58.5x + 135 = 0 x1 = -10 , x2 = -3 | 8.5x² + 17x - 535.5 = 0 x1 = -9 , x2 = 7 |
| -8.5x² + 51x + 229.5 = 0 x1 = -3 , x2 = 9 | -6.5x² - 78x - 208 = 0 x1 = -8 , x2 = -4 |
| -7x² - 70x - 175 = 0 x1 = -5 , x2 = -5 | 4x² - 24x + 32 = 0 x1 = 2 , x2 = 4 |
| 3.5x² + 14x - 73.5 = 0 x1 = -7 , x2 = 3 | -10x² - 110x - 180 = 0 x1 = -9 , x2 = -2 |
| 3x² - 3 = 0 x1 = -1 , x2 = 1 | 6x² - 36x - 96 = 0 x1 = -2 , x2 = 8 |
| -1.5x² - 1.5x + 9 = 0 x1 = -3 , x2 = 2 | -7x² + 84x - 189 = 0 x1 = 3 , x2 = 9 |