| 4x² - 64 = 0 x1 = -4 , x2 = 4 | 4x² - 24x = 0 x1 = 0 , x2 = 6 |
| -2x² - 18x - 16 = 0 x1 = -8 , x2 = -1 | 4.5x² + 4.5x - 54 = 0 x1 = -4 , x2 = 3 |
| x² - 12x + 32 = 0 x1 = 4 , x2 = 8 | 8.5x² + 110.5x + 306 = 0 x1 = -9 , x2 = -4 |
| -x² - 8x = 0 x1 = -8 , x2 = 0 | -3.5x² + 24.5x + 105 = 0 x1 = -3 , x2 = 10 |
| -x² - 20x - 100 = 0 x1 = -10 , x2 = -10 | 10x² - 60x - 270 = 0 x1 = -3 , x2 = 9 |
| 5x² + 40x = 0 x1 = -8 , x2 = 0 | -7x² + 63x + 70 = 0 x1 = -1 , x2 = 10 |
| x² - 4x - 60 = 0 x1 = -6 , x2 = 10 | -5.5x² - 77x - 247.5 = 0 x1 = -9 , x2 = -5 |
| -5.5x² - 99x - 445.5 = 0 x1 = -9 , x2 = -9 | -9x² - 90x - 144 = 0 x1 = -8 , x2 = -2 |
| -10x² - 60x - 90 = 0 x1 = -3 , x2 = -3 | 0.5x² - 4x = 0 x1 = 0 , x2 = 8 |
| -8.5x² + 127.5x - 425 = 0 x1 = 5 , x2 = 10 | 8x² + 40x - 48 = 0 x1 = -6 , x2 = 1 |