| a^2-6a+5 | (a-1)(a-5) |
| a^2+4a+4 | (a+2)(a+2) |
| a^2-25 | (a+5)(a-5) |
| a^2-8a+15 | (a-3)(a-5) |
| a^2+2a-15 | (a-3)(a+5) |
| a^2-2a-15 | (a+3)(a-5) |
| a^2+8a+15 | (a+3)(a+5) |
| a^2-9b^2 | (a-3b)(a+3b) |
| 4a^2-9b^2 | (2a-3b)(2a+3b) |
| 4a^2+12ab+9b^2 | (2a+3b)(2a+3b) |
| a^2-3a+2 | (a-1)(a-2) |
| 2a^2-3a-9 | (a-3)(2a+3) |
| 2a^2+3a-9 | (2a-3)(a+3) |
| a^2+8a+16 | (a+4)(a+4) |
| a^2+4a-5 | (a+5)(a-1) |
| a^2-1 | (a-1)(a+1) |
| a^2-49 | (a-7)(a+7) |
| a^2+11a+10 | (a+1)(a+10) |
| a^2+5a+6 | (a+3)(a+2) |