| -2x4 + 24x2 - 40 = 0 x1 = 3.16 x2 = -3.16x3 = 1.41 x4 = -1.41 | 5.5x4 - 33x2 - 148.5 = 0 x1 = 3 x2 = -3x3 = ◊ x4 = ◊ |
| -4x4 - 64x2 - 252 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | 9.5x4 - 28.5x2 - 171 = 0 x1 = 2.45 x2 = -2.45x3 = ◊ x4 = ◊ |
| 1.5x4 + 6x2 = 0 x1 = 0 x2 = 0x3 = ◊ x4 = ◊ | -7x4 - 56x2 + 140 = 0 x1 = ◊ x2 = ◊x3 = 1.41 x4 = -1.41 |
| 4.5x4 - 63x2 + 216 = 0 x1 = 2.45 x2 = -2.45x3 = 2.83 x4 = -2.83 | 4x4 + 36x2 + 80 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ |
| -5x4 + 15x2 + 350 = 0 x1 = ◊ x2 = ◊x3 = 3.16 x4 = -3.16 | 4x4 - 64 = 0 x1 = ◊ x2 = ◊x3 = 2 x4 = -2 |
| -6x4 - 60x2 - 144 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | -3.5x4 - 3.5x2 + 315 = 0 x1 = 3 x2 = -3x3 = ◊ x4 = ◊ |
| 6x4 - 12x2 - 210 = 0 x1 = 2.65 x2 = -2.65x3 = ◊ x4 = ◊ | -10x4 + 20x2 + 150 = 0 x1 = 2.24 x2 = -2.24x3 = ◊ x4 = ◊ |
| -8x4 - 96x2 - 256 = 0 x1 = ◊ x2 = ◊x3 = ◊ x4 = ◊ | -8x4 - 24x2 + 432 = 0 x1 = 2.45 x2 = -2.45x3 = ◊ x4 = ◊ |
| 8.5x4 + 25.5x2 - 459 = 0 x1 = 2.45 x2 = -2.45x3 = ◊ x4 = ◊ | 9x4 - 36x2 - 108 = 0 x1 = 2.45 x2 = -2.45x3 = ◊ x4 = ◊ |
| -4.5x4 - 4.5x2 + 252 = 0 x1 = 2.65 x2 = -2.65x3 = ◊ x4 = ◊ | -3.5x4 - 7x2 + 84 = 0 x1 = ◊ x2 = ◊x3 = 2 x4 = -2 |