| 9p+9q | 9(p+q) |
| 8a-8b | 8(a-b) |
| 7ax+7bx | 7x(a+b) |
| 23u+23 | 23(u+1) |
| 3az-3a | 3a(z-1) |
| 8a^2-4a | 4a(2a-1) |
| 21n^4+14n^2 | 7n^2(3n^2+2) |
| mx+my+m | m(x+y+1) |
| 8a^2b+6ab^2 | 2ab(4a+3b) |
| x-ax-bx | x(1-a-b) |
| 12rst-6rs | 6rs(2t-1) |
| a^2b+ab^2-ab | ab(a+b-1) |
| 12x-36y+84z | 12(x-3y+7z) |
| 15a-10b+20c-25 | 5(3a-2b+4c-5) |
| mx^2-mx^3+mx | mx(x-x^2+1) |
| 2uv-4u^2v+8uv^2 | 2uv(1-2u+4v) |