a2 |
a2+2a |
a2 |
a-2 |
4 |
a-2 |
a2 |
a(a+2) |
(a+2)(a-2) |
a-2 |
m2-2m |
4-m2 |
x-y |
x2-2xy+y2 |
b |
a-b |
a |
a+b |
2ab |
b2-a2 |
1 |
b |
1 |
a |
ab |
a2-b2 |
2b2 |
a-b |
3 |
x-1 |
x+2 |
2x-2 |
1 |
a-1 |
1 |
a+1 |
a |
1-a2 |
2008a |
a2-2a+1 |
1 |
a-1 |
m |
m+3 |
6 |
m2-9 |
2 |
m-3 |
3x |
x-2 |
x |
x+2 |
2x |
x2-4 |
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