X to the power of 2 4x
- X to the power of 2 4x 3
- X to the power of 2 4x 4
- X to the power of 2 4x 12
- X to the power of 2 4x 21
- X to the power of 2 4x 0
- X to the power of 2 minus 4x
- X to the power of 2 plus 4x
- X to the power of 2 times 4x
- X 28 4x to the power of 2
- 4x to the power of 2 if x 3
- 2 x 4x10 to the power of 5
- 3x to the power of 2 x 4x to the power of 5