| a2-9 |
| a-1 |
| a2-6a+9 |
| a2-a |
| a2 |
| a-3 |
| (a+3)(a-3) |
| a-1 |
| (a-3)2 |
| a(a-1) |
| a2 |
| a-3 |
| a(a+3)(a-3)2 |
| a(a-1)(a-3) |
| (a-3)3 |
| a(a-1)(a-3) |
| a3(a-1) |
| a(a-1)(a-3) |
| -a3-17a2+42a |
| a(a-1)(a-3) |
| (a+3)(a-3) |
| a-1 |
| (a-3)2 |
| a(a-1) |
| a2 |
| a-3 |
| a(a+3)(a-3)2 |
| a(a-1)(a-3) |
| (a-3)3 |
| a(a-1)(a-3) |
| a3(a-1) |
| a(a-1)(a-3) |
| -a3-17a2+42a |
| a(a-1)(a-3) |