| -4.5x² - 13.5x + 180 = 0 x1 = -8 , x2 = 5 | -9.5x² - 171x - 760 = 0 x1 = -10 , x2 = -8 |
| 8.5x² - 68x + 127.5 = 0 x1 = 3 , x2 = 5 | 9.5x² + 66.5x + 57 = 0 x1 = -6 , x2 = -1 |
| -10x² - 110x - 240 = 0 x1 = -8 , x2 = -3 | -8x² + 32x + 96 = 0 x1 = -2 , x2 = 6 |
| -2.5x² + 15x = 0 x1 = 0 , x2 = 6 | -2x² + 162 = 0 x1 = -9 , x2 = 9 |
| -7.5x² + 75x - 120 = 0 x1 = 2 , x2 = 8 | -5x² + 90x - 400 = 0 x1 = 8 , x2 = 10 |
| 5.5x² + 5.5x - 33 = 0 x1 = -3 , x2 = 2 | 8x² - 16x = 0 x1 = 0 , x2 = 2 |
| -4x² + 76x - 360 = 0 x1 = 9 , x2 = 10 | -8.5x² + 68x = 0 x1 = 0 , x2 = 8 |
| 4x² + 52x + 120 = 0 x1 = -10 , x2 = -3 | 0.5x² - 1.5x - 20 = 0 x1 = -5 , x2 = 8 |
| -5.5x² + 11x + 132 = 0 x1 = -4 , x2 = 6 | -4x² - 28x + 120 = 0 x1 = -10 , x2 = 3 |
| 2.5x² + 17.5x - 20 = 0 x1 = -8 , x2 = 1 | 5x² - 30x = 0 x1 = 0 , x2 = 6 |