| -8.5x² + 17x = 0 x1 = 0 , x2 = 2 | -3x² + 12 = 0 x1 = -2 , x2 = 2 |
| -2.5x² - 7.5x + 25 = 0 x1 = -5 , x2 = 2 | 4x² + 60x + 224 = 0 x1 = -8 , x2 = -7 |
| -9x² - 72x - 135 = 0 x1 = -5 , x2 = -3 | -4.5x² - 18x = 0 x1 = -4 , x2 = 0 |
| 6x² - 24x - 30 = 0 x1 = -1 , x2 = 5 | -9x² - 63x - 54 = 0 x1 = -6 , x2 = -1 |
| 8x² - 72x - 80 = 0 x1 = -1 , x2 = 10 | -5.5x² - 33x = 0 x1 = -6 , x2 = 0 |
| 7x² - 98x + 280 = 0 x1 = 4 , x2 = 10 | 9.5x² + 66.5x + 57 = 0 x1 = -6 , x2 = -1 |
| 2.5x² + 17.5x + 15 = 0 x1 = -6 , x2 = -1 | -2x² + 12x + 54 = 0 x1 = -3 , x2 = 9 |
| 0.5x² - x = 0 x1 = 0 , x2 = 2 | 5.5x² - 33x - 88 = 0 x1 = -2 , x2 = 8 |
| -9x² + 9x + 810 = 0 x1 = -9 , x2 = 10 | 3x² + 6x - 45 = 0 x1 = -5 , x2 = 3 |
| -6.5x² + 58.5x = 0 x1 = 0 , x2 = 9 | 3.5x² + 35x = 0 x1 = -10 , x2 = 0 |