a+1 |
a-1 |
1 |
a2-2a+1 |
a |
a-1 |
a+1 |
2a |
1 |
a |
a+1 |
a-1 |
1 |
(a-1)2 |
a-1 |
a |
(a+1)(a-1)+1 |
(a-1)2 |
a-1 |
a |
a2 |
(a-1)2 |
a-1 |
a |
a |
a-1 |
a+1 |
2a |
1 |
a |
-1 |
-1-1 |
1 |
2 |
1 |
x+2 |
x2-1 |
x+2 |
2 |
x-1 |
4 |
x2-1 |
1 |
x-1 |
1 |
x+1 |
2 |
2x2-2 |
1 |
2 |
3-x |
x-2 |
5 |
x-2 |
1 |
x |
x2-1 |
x |
2a-1 |
a |
1-a2 |
a2+a |
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