| -2.5x4 + 40x2 - 150 = 0 x1 = 3.16 x2 = -3.16x3 = 2.45 x4 = -2.45 | -6x4 - 108x2 - 480 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ |
| 2.5x4 + 12.5x2 + 15 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | -5x4 + 5x2 + 210 = 0 x1 = ◊ x2 = ◊x3 = 2.65 x4 = -2.65 |
| -0.5x4 - 5x2 - 12.5 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | 7x4 - 49x2 + 42 = 0 x1 = 1 x2 = -1x3 = 2.45 x4 = -2.45 |
| -2x4 + 20x2 = 0 x1 = 0 x2 = 0x3 = 3.16 x4 = -3.16 | 1.5x4 = 0 x1 = 0 x2 = 0x3 = 0 x4 = 0 |
| -2.5x4 + 62.5 = 0 x1 = ◊ x2 = ◊x3 = 2.24 x4 = -2.24 | -2.5x4 + 25x2 - 22.5 = 0 x1 = 3 x2 = -3x3 = 1 x4 = -1 |
| 3x4 - 42x2 + 120 = 0 x1 = 2 x2 = -2x3 = 3.16 x4 = -3.16 | 8.5x4 + 51x2 = 0 x1 = ◊ x2 = ◊x3 = 0 x4 = 0 |
| -8x4 - 16x2 + 280 = 0 x1 = 2.24 x2 = -2.24x3 = ◊ x4 = ◊ | -8x4 - 32x2 + 96 = 0 x1 = ◊ x2 = ◊x3 = 1.41 x4 = -1.41 |
| x4 + 13x2 + 30 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | -3x4 - 9x2 + 30 = 0 x1 = 1.41 x2 = -1.41x3 = ◊ x4 = ◊ |
| 10x4 + 20x2 = 0 x1 = ◊ x2 = ◊x3 = 0 x4 = 0 | 3.5x4 - 17.5x2 = 0 x1 = 2.24 x2 = -2.24x3 = 0 x4 = 0 |
| -2.5x4 + 10x2 + 12.5 = 0 x1 = ◊ x2 = ◊x3 = 2.24 x4 = -2.24 | 4x4 - 20x2 = 0 x1 = 0 x2 = 0x3 = 2.24 x4 = -2.24 |