| -8.5x² + 17x + 25.5 = 0 x1 = -1 , x2 = 3 | -2x² - 24x - 72 = 0 x1 = -6 , x2 = -6 |
| -8.5x² + 17x + 535.5 = 0 x1 = -7 , x2 = 9 | 4.5x² + 18x - 94.5 = 0 x1 = -7 , x2 = 3 |
| 2.5x² - 5x - 120 = 0 x1 = -6 , x2 = 8 | -3.5x² + 42x - 112 = 0 x1 = 4 , x2 = 8 |
| 10x² + 170x + 720 = 0 x1 = -9 , x2 = -8 | -6.5x² + 32.5x + 39 = 0 x1 = -1 , x2 = 6 |
| 3.5x² - 35x + 56 = 0 x1 = 2 , x2 = 8 | 7.5x² - 67.5x = 0 x1 = 0 , x2 = 9 |
| 10x² + 40x - 50 = 0 x1 = -5 , x2 = 1 | 4x² + 28x + 48 = 0 x1 = -4 , x2 = -3 |
| 8.5x² + 17x = 0 x1 = -2 , x2 = 0 | -5x² + 20x + 225 = 0 x1 = -5 , x2 = 9 |
| -9.5x² - 66.5x - 57 = 0 x1 = -6 , x2 = -1 | 8.5x² - 127.5x + 476 = 0 x1 = 7 , x2 = 8 |
| -9x² + 45x + 450 = 0 x1 = -5 , x2 = 10 | -7.5x² - 82.5x - 210 = 0 x1 = -7 , x2 = -4 |
| 8.5x² - 59.5x - 255 = 0 x1 = -3 , x2 = 10 | 4x² + 52x + 160 = 0 x1 = -8 , x2 = -5 |