1 |
a |
1 |
1-a |
a2-a+1 |
a2-2a+1 |
1 |
a |
1 |
1-a |
a2-a+1 |
a2-2a+1 |
1 |
a |
(a2-a+1)2 |
(a-1)2 |
(a-1)2 |
a2-a+1 |
1 |
a |
1-a3+a2-a |
a |
1-(-1)3+(-1)2-(-1) |
-1 |
1 |
1-x |
x |
x-1 |
a2+8 |
a2+4a+4 |
4a-4 |
a2+2a |
1 |
x |
x2-1 |
x |
x-2 |
x+2 |
x+2 |
x-2 |
x2-2x |
x2 |
-2xy |
x2-y2 |
1 |
x-y |
1 |
x+y |
2 |
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