1 |
x-1 |
1 |
x+1 |
1 |
x |
2 |
1 |
x-1 |
1 |
x+1 |
1 |
x |
(x+1)-(x-1) |
(x-1)(x+1) |
x2-1 |
x |
2 |
(x-1)(x+1) |
(x+1)(x-1) |
x |
2 |
x |
2 |
2 | ||
|
2 |
1 |
a-b |
1 |
a+b |
b |
a2-2ab+b2 |
2 |
2 |
a2-2a+1 |
a2-1 |
a2-a |
a+1 |
2 |
a |
3 |
x-3 |
3x2-6x |
5 |
x-2 |
1 |
x |
x+1 |
x |
2 |
1 |
a2+2a |
a2 |
a-2 |
4 |
a-2 |
2 |
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