| x2-2x+1 |
| x2-1 |
| x-1 |
| x2+x |
| 3 |
| x-4 |
| 24 |
| x2-16 |
| (x-1)2 |
| (x+1)(x-1) |
| x-1 |
| x(x+1) |
| x-1 |
| x+1 |
| x(x+1) |
| x-1 |
| 3(x+4) |
| (x+4)(x-4) |
| 24 |
| (x+4)(x-4) |
| 3x-12 |
| (x+4)(x-4) |
| 3 |
| x+4 |
| 1 |
| a |
| 1 |
| b |
| a-ab-b |
| 2a+ab-2b |
| 3x |
| x-1 |
| x |
| x+1 |
| x2-1 |
| x |
| a2+b2 |
| ab |
| a2-b2 |
| a-b |
| 1 |
| 2 |
| 1 |
| a |
| 1 |
| b |
| 4 |
| a+b |
| b |
| a |
| a |
| b |
| 2a+2 |
| a-1 |
| a2-1 |
| a2-2a+1 |
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