| x |
| x+2 |
| x+2 |
| x-2 |
| 8 |
| x2-4 |
| x |
| x+1 |
| 2x |
| 3x+3 |
| 1 |
| x-2 |
| 1-x |
| 2-x |
| 3 |
| 2x+3 |
| 2x-15 |
| 4x2-9 |
| 100 |
| x |
| 100-x |
| 2x |
| 1 |
| 2x-6 |
| x |
| 3-x |
| 2 |
| 5+x |
| 1 |
| 1+x |
| 2 |
| x2-1 |
| x |
| x+1 |
| 8 |
| x2-4 |
| x |
| x-2 |
| 1 |
| x |
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| x |
| 2 |
| m |
| 2 |
| m |
| 3 |
| x |
| 3 |
| m |
| 3 |
| m |
| c |
| x |
| c |
| b |
| c |
| b |
| c |
| b |
| 2 |
| x-1 |
| 2 |
| a-1 |
| 1 |
| 3 |
| 2 |
| 9 |
| 3 |
| x-1 |
| x+2 |
| x(x-1) |
| 1 |
| 2 |
| 1 |
| 1×2 |
| 1 |
| 1 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2×3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 3×4 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 20 |
| 1 |
| 4×5 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 30 |
| 1 |
| 5×6 |
| 1 |
| 5 |
| 1 |
| 6 |
| 1 |
| x(x+1) |
| 1 |
| x |
| 1 |
| x+1 |
| 1 |
| x(x+1) |
| 1 |
| x |
| 1 |
| x+1 |
| 1 |
| (x-4)(x-3) |
| 1 |
| (x-3)(x-2) |
| 1 |
| (x-2)(x-1) |
| 1 |
| (x-1)x |
| 1 |
| x(x+1) |
| 1 |
| x+1 |
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 2009×2011 |
| 1 |
| x-3 |
| x |
| x-3 |
| 2x |
| 2x-1 |
| x-1 |
| x-2 |