a-1 |
a+2 |
a2-4 |
a2-2a+1 |
1 |
a+3 |
a-1 |
a+2 |
(a-2)(a+2) |
(a-1)2 |
1 |
a+3 |
(a-2)(a+3)+a-1 |
(a-1)(a+3) |
a2+2a-7 |
a2+2a-3 |
a2+2a-7 |
a2+2a-3 |
15-7 |
15-3 |
2 |
3 |
2xy |
x2-y2 |
x2+y2 |
x2-y2 |
a2-b2 |
a2-ab |
2ab+b2 |
a |
(a+1)(a-2) |
a2-4a+4 |
a |
a2-2a |
a |
a-2 |
4-a2 |
a2+6a+9 |
a-2 |
2a+6 |
1 |
x+2 |
x2+2x+1 |
x2-4 |
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