| x² - 14x - 72 = 0 x1 = -4 , x2 = 18 | x² + 4x = 0 x1 = -4 , x2 = 0 |
| x² - 2x - 255 = 0 x1 = -15 , x2 = 17 | x² + 27x + 140 = 0 x1 = -20 , x2 = -7 |
| x² + 3x - 340 = 0 x1 = -20 , x2 = 17 | x² + 8x + 7 = 0 x1 = -7 , x2 = -1 |
| x² - 20x = 0 x1 = 0 , x2 = 20 | x² - 36 = 0 x1 = -6 , x2 = 6 |
| x² - 11x + 28 = 0 x1 = 4 , x2 = 7 | x² + 25x + 154 = 0 x1 = -14 , x2 = -11 |
| x² - 20x + 75 = 0 x1 = 5 , x2 = 15 | x² - 22x + 57 = 0 x1 = 3 , x2 = 19 |
| x² + 3x - 180 = 0 x1 = -15 , x2 = 12 | x² + 19x = 0 x1 = -19 , x2 = 0 |
| x² + 29x + 198 = 0 x1 = -18 , x2 = -11 | x² - 13x + 36 = 0 x1 = 4 , x2 = 9 |
| x² + 25x + 144 = 0 x1 = -16 , x2 = -9 | x² + 7x + 6 = 0 x1 = -6 , x2 = -1 |
| x² + 4x - 12 = 0 x1 = -6 , x2 = 2 | x² + 18x + 81 = 0 x1 = -9 , x2 = -9 |