Mathias Kunz, Willisau
| x^2+7x+12 | (x+3)(x+4) |
| x^4-2x^2-8 | (x^2-4)(x^2+2) |
| x^2-4x-21 | (x-7)(x+3) |
| x^2-2x-3 | (x+1)(x-3) |
| x^2+11x+30 | (x+6)(x+5) |
| x^2+6x-27 | (x+9)(x-3) |
| x^2-17x+52 | (x-13)(x-4) |
| 2x^2+7x+5 | (2x+5)(x+1) |
| 3x^2-17x+10 | (3x-2)(x-5) |
| 10x^2+27x+5 | (5x+1)(2x+5) |
| 3x^2-14x-5 | (3x+1)(x-5) |
| (2x-9)^2 | 4x^2-36x+81 |
| (3x-5)(3x+5) | 9x^2-25 |
| (0.5x+0.5)^2 | 0.25x^2+0.5x+0.25 |
| (5x-2)^2 | 25x^2-20x+4 |
| (3x+7)^2 | 9x^2+42x+49 |
| (8x-12)(8x+12) | 64x^2-144 |
| (x+13)^2 | x^2+26x+169 |
| (11x-15)(11x+15) | 121x^2-225 |
| (10x-1/2)^2 | 100x^2-10x+1/4 |
| (9x+5)^2 | 81x^2+90x+25 |
| (2x-3)(2x+3) | 4x^2-9 |