199009922 |
199009912+199009932-2 |
x2 |
(x-1)2+(x+1)2-2 |
x2 |
2x2 |
1 |
2 |
1 |
2006 |
2008 |
20052-1 |
20042 |
20072-1 |
1 |
a |
a+2 |
(a-1)2-1 |
(a-2)2 |
(a+1)2-1 |
1 |
a |
a+2 |
a(a-2) |
(a-2)2 |
a(a+2) |
1 |
a |
a-2 |
a2 |
a-b |
3b2 |
a-4b |
3b2 |
a2-2 |
a-b |
b2-2 |
b-a |
3y2 |
2x |
y |
x |
5x-4 |
x2-4x+4 |
x+1 |
x-2 |
1 |
a+1 |
(x+2)2-(x-2)2 |
x |
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