| a2b |
| cd3 |
| 2a |
| d3 |
| c |
| 2a |
| a |
| a-1 |
| a2-a |
| a2-1 |
| 1 |
| a-1 |
| a6b3 |
| c3d9 |
| d3 |
| 2a |
| c2 |
| 4a2 |
| a3b3 |
| cd3 |
| a |
| a-1 |
| (a+1)(a-1) |
| a(a-1) |
| 1 |
| a-1 |
| a+1 |
| a-1 |
| 1 |
| a-1 |
| a |
| a-1 |
| 1 |
| x-2 |
| x2-2x+1 |
| x2-2x |
| a+9b |
| 3ab |
| a+3b |
| 3ab |
| x2-1 |
| (x-1)2 |
| 1 |
| x-1 |
| 1 |
| x+1 |
| x+2 |
| x-2 |
| 4 |
| x2-4x+4 |
| x |
| x-2 |
| a2+4a+4 |
| a+1 |
| 3 |
| a+1 |
| 1 |
| x |
| 1 |
| x2 |
| a |
| a-b |
| a2 |
| a2-2ab+b2 |
| a |
| a+b |
| a2 |
| a2-b2 |
| 2 |
| 3 |
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