X 4 4x 3 4x 2 1 0
- X 4 4x 3 3x 2 2x 1 0
- X 5 4x 4 3x 3 3x 2 4x 1 0
- X 4 4x 3 6x 2 4x 1 0
- X 4 4x 3 5x 2 4x 1 0
- X 4 4x 3 2x 2 4x 1 0
- X 4 4x 3 3x 2 4x 1 0
- X 4 4x 3 ax 2 bx 1 0
- X 4 4x 3 12x 2 x 1 0
- Tìm x biết x 4 4x 3 6x 2 4x 1 0
- X 4 4x 3 10x 2 12x 1 0
- X 5 4x 4 x 3 x 2 4x 1 0
- The roots of the equation x 4 4x 3 6x 2 4x 1 0 are