| 4 |
| a |
| 1 |
| 2 |
| x |
| 3 |
| x2-y2 |
| x+y |
| 3x |
| 2π |
| b2 |
| a |
| b5 |
| a2 |
| b8 |
| a2 |
| b11 |
| a4 |
| b20 |
| a7 |
| b20 |
| a7 |
| xy2 |
| 2 |
| x |
| π |
| 1 |
| a+1 |
| 1 |
| x+y |
| m |
| 22-1 |
| 1 |
| a+1 |
| 1 |
| x+y |
| 1 |
| a+1 |
| 1 |
| x+y |
| 1 |
| a |
| 2 |
| a+b |
| x+y |
| 2 |
| 1 |
| π |
| x2 |
| x |
| 2 |
| 3 |
| 1 |
| a |
| 2 |
| a+b |
| x2 |
| x |
| 1 |
| a |
| 2 |
| a+b |
| x2 |
| x |
| 4 |
| x |
| x+3 |
| 1 |
| x1+1 |
| π |
| 4 |
| 1x1+3x |
| 1 |
| 4 |
| 3 |
| 1 |
| y1-1 |
| y+1 |
| 4 |
| x |
| 4 |
| 1x1+3x |
| y1-1 |
| y+1 |
| 4 |
| x |
| 4 |
| 1x1+3x |
| y1-1 |
| y+1 |
| 2 |
| x |
| 1 |
| i |
| 5 |
| π-i |
| x2 |
| a-1 |
| 2 |
| x |
| x2 |
| a-1 |
| 2 |
| x |
| x2 |
| a-1 |
| 3 |
| x |
| b |
| 2 |
| b |
| 3a2 |
| x |
| 5 |
| 2 |
| m |
| 1 |
| n |
| x2 |
| x |
| 1 |
| π |
| e |
| 8 |
| 1 |
| ea |
| xy |
| e |
| b |
| e |
| b |
| 你 |
| x |
| xy |
| xr |
| 小 |
| 右 |
| rπ |
| 4b |
| a |
| 7 |
| 6 |
| 15 |
| x+y |
| 5a-b |
| 2x-y |
| 3a2-b2 |
| 4 |
| 1 |
| m |
| 5xy |
| 6 |