| 0.5x² + 6x + 10 = 0 x1 = -10 , x2 = -2 | 7x² + 14x - 105 = 0 x1 = -5 , x2 = 3 |
| 2.5x² + 17.5x - 75 = 0 x1 = -10 , x2 = 3 | 2x² + 20x + 42 = 0 x1 = -7 , x2 = -3 |
| -9x² + 27x = 0 x1 = 0 , x2 = 3 | -0.5x² + 0.5x + 3 = 0 x1 = -2 , x2 = 3 |
| -10x² + 20x + 350 = 0 x1 = -5 , x2 = 7 | -0.5x² + 5.5x - 15 = 0 x1 = 5 , x2 = 6 |
| -x² - 8x - 16 = 0 x1 = -4 , x2 = -4 | 4x² - 8x - 140 = 0 x1 = -5 , x2 = 7 |
| -0.5x² - 7x - 22.5 = 0 x1 = -9 , x2 = -5 | -2.5x² - 22.5x - 20 = 0 x1 = -8 , x2 = -1 |
| 6x² - 42x - 180 = 0 x1 = -3 , x2 = 10 | -2x² - 12x = 0 x1 = -6 , x2 = 0 |
| -0.5x² + 8.5x - 35 = 0 x1 = 7 , x2 = 10 | -3.5x² + 45.5x - 140 = 0 x1 = 5 , x2 = 8 |
| 4x² - 4x - 288 = 0 x1 = -8 , x2 = 9 | 6.5x² + 26x = 0 x1 = -4 , x2 = 0 |
| -x² - 4x + 12 = 0 x1 = -6 , x2 = 2 | -2.5x² = 0 x1 = 0 , x2 = 0 |