| n+m |
| m-2n |
| m2-n2 |
| m2-4mn+4n2 |
| 3a |
| a2-b2 |
| 2a |
| b2-a2 |
| b |
| (a+b)(a-b) |
| x+1 |
| 2x2+4x |
| 6x(x+2) |
| x2-1 |
| 2x+4 |
| x2-6x+9 |
| x-3 |
| 2 |
| n+m |
| m-2n |
| (m-2n)2 |
| (m+n)(m-n) |
| 3n |
| m+n |
| 3a-2a+b |
| (a+b)(a-b) |
| 1 |
| a-b |
| x+1 |
| 2x(x+2) |
| 6x(x+2) |
| (x+1)(x-1) |
| 3 |
| x-1 |
| 2(x+2) |
| (x-3)2 |
| 2 |
| (x+2)(x-3) |
| 1 |
| x-1 |
| 3n |
| m+n |
| 1 |
| a-b |
| 3 |
| x-1 |
| 1 |
| x-1 |
| n+m |
| m-2n |
| (m-2n)2 |
| (m+n)(m-n) |
| 3n |
| m+n |
| 3a-2a+b |
| (a+b)(a-b) |
| 1 |
| a-b |
| x+1 |
| 2x(x+2) |
| 6x(x+2) |
| (x+1)(x-1) |
| 3 |
| x-1 |
| 2(x+2) |
| (x-3)2 |
| 2 |
| (x+2)(x-3) |
| 1 |
| x-1 |
| 3n |
| m+n |
| 1 |
| a-b |
| 3 |
| x-1 |
| 1 |
| x-1 |