| -1.5x² + 1.5x + 9 = 0 x1 = -2 , x2 = 3 | -7x² - 42x = 0 x1 = -6 , x2 = 0 |
| -8x² + 80x = 0 x1 = 0 , x2 = 10 | -9.5x² - 28.5x + 266 = 0 x1 = -7 , x2 = 4 |
| -3x² - 3x + 90 = 0 x1 = -6 , x2 = 5 | -5x² - 55x - 50 = 0 x1 = -10 , x2 = -1 |
| -0.5x² - 4x = 0 x1 = -8 , x2 = 0 | 2x² - 10x - 100 = 0 x1 = -5 , x2 = 10 |
| -10x² - 40x + 450 = 0 x1 = -9 , x2 = 5 | -5x² - 20x + 60 = 0 x1 = -6 , x2 = 2 |
| x² + 6x = 0 x1 = -6 , x2 = 0 | -9x² - 72x - 63 = 0 x1 = -7 , x2 = -1 |
| -4x² - 32x = 0 x1 = -8 , x2 = 0 | -4.5x² + 112.5 = 0 x1 = -5 , x2 = 5 |
| 2.5x² + 27.5x + 45 = 0 x1 = -9 , x2 = -2 | -2.5x² + 12.5x + 35 = 0 x1 = -2 , x2 = 7 |
| 8.5x² - 119x + 382.5 = 0 x1 = 5 , x2 = 9 | -9x² + 36x + 189 = 0 x1 = -3 , x2 = 7 |
| -6.5x² + 65x - 104 = 0 x1 = 2 , x2 = 8 | 8x² + 32x + 24 = 0 x1 = -3 , x2 = -1 |