| -7.5x² + 30x - 22.5 = 0 x1 = 1 , x2 = 3 | -5.5x² - 33x + 88 = 0 x1 = -8 , x2 = 2 |
| 10x² + 30x - 400 = 0 x1 = -8 , x2 = 5 | -3x² + 27x + 30 = 0 x1 = -1 , x2 = 10 |
| 0.5x² + 6x + 13.5 = 0 x1 = -9 , x2 = -3 | -0.5x² + 5.5x - 9 = 0 x1 = 2 , x2 = 9 |
| -9x² + 576 = 0 x1 = -8 , x2 = 8 | 9.5x² - 66.5x + 114 = 0 x1 = 3 , x2 = 4 |
| -2x² + 2x + 24 = 0 x1 = -3 , x2 = 4 | 10x² - 10x - 60 = 0 x1 = -2 , x2 = 3 |
| -6.5x² + 45.5x = 0 x1 = 0 , x2 = 7 | 2.5x² + 5x + 2.5 = 0 x1 = -1 , x2 = -1 |
| 2x² - 50 = 0 x1 = -5 , x2 = 5 | 1.5x² - 1.5 = 0 x1 = -1 , x2 = 1 |
| 1.5x² - 1.5x - 108 = 0 x1 = -8 , x2 = 9 | 0.5x² - 2.5x + 2 = 0 x1 = 1 , x2 = 4 |
| 1.5x² + 27x + 120 = 0 x1 = -10 , x2 = -8 | -9x² + 18x - 9 = 0 x1 = 1 , x2 = 1 |
| 9x² - 63x + 108 = 0 x1 = 3 , x2 = 4 | 5x² - 70x + 240 = 0 x1 = 6 , x2 = 8 |