X 3 x 2 4x 1 0
- X 3 3x 2 4x 1 0
- X 3 3x 2 24x 1 0
- X 4 4x 3 x 2 4x 1 0
- X 4 2x 3 3x 2 4x 1 0
- X 5 4x 4 3x 3 3x 2 4x 1 0
- X 4 4x 3 12x 2 x 1 0
- 5 2x log x 2 4x 3 x 1 0
- X 4 4x 3 3x 2 4x 1 0
- X 3 2x 2 4x 1 0
- X 5 4x 4 x 3 x 2 4x 1 0
- X 3 5x 2 4x 1 0
- Tìm x biết x 4 4x 3 6x 2 4x 1 0
- M 3 x 2 4x 1 0
- The equation x 4 2x 3 3x 2 4x 1 0
- X 4 3x 2 4x 2 3x 1 0