| 1 |
| m |
| x |
| 2 |
| 3xy |
| π |
| a |
| a+1 |
| m |
| 7 |
| n |
| 8 |
| 2 |
| x |
| 3 |
| x |
| 1 |
| m |
| 3x |
| π |
| x |
| 7 |
| y |
| 3 |
| 1 |
| 3 |
| 1 |
| 4-x |
| 9 |
| x |
| ab |
| x-3 |
| 9 |
| 5 |
| x |
| π+1 |
| x |
| x+1 |
| x |
| h |
| a |
| π |
| xh |
| x |
| x |
| x+y |
| y |
| 2 |
| 1 |
| a2+3 |
| a |
| 13 |
| x |
| y |
| k(n-2) |
| n |
| 1 |
| a |
| b |
| 3 |
| 2 |
| π |
| 1 |
| x |
| 2x |
| x |
| m-n |
| m-n |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| xy |
| 1 |
| 5+a |
| x |
| x2 |
| x |
| π |
| 10 |
| y |
| x |
| 3 |
| x |
| x |
| 1 |
| 2 |
| 1 |
| a |
| 2x |
| π-1 |
| m-n |
| m+n |
| 1 |
| y |
| a-b |
| 2 |
| x(x+3) |
| x |
| 5+x |
| π |
| a+b |
| a-b |
| 1 |
| m |