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