Mathias Kunz, Willisau
| (x+1)^2 | x^2+2x+1 |
| (2x+1)^2 | 4x^2+4x+1 |
| (5x+1)^2 | 25x^2+10x+1 |
| (3x+1)^2 | 9x^2+6x+1 |
| (x+5)^2 | x^2+10x+25 |
| (x+7)^2 | x^2+14x+49 |
| (2x-4)^2 | 4x^2-16x+16 |
| (3x-1)^2 | 9x^2-6x+1 |
| (5x-7)^2 | 25x^2-70x+49 |
| (2x-8)^2 | 4x^2-32x+64 |
| (-x-5)^2 | x^2+10x+25 |
| (x-1)(x+1) | x^2-1 |
| (3x-1)(3x+1) | 9x^2-1 |
| (5x-3)(5x+3) | 25x^2-9 |
| (x+5)(x-5) | x^2-25 |
| (x-10)(x+10) | x^2-100 |