4a |
a2-1 |
1+a |
1-a |
3 |
x |
6 |
x-1 |
7 |
x2-x |
4a |
(a+1)(a-1) |
a+1 |
a-1 |
4a-(a+1)2 |
(a+1)(a-1) |
a2-2a+1 |
(a+1)(a-1) |
(a-1)2 |
(a+1)(a-1) |
a-1 |
a+1 |
10 |
9 |
10 |
9 |
10 |
9 |
3-x |
x-4 |
1 |
4-x |
2x |
x-3 |
m |
x-3 |
3 |
x-1 |
2 |
x+1 |
x |
x-2 |
8 |
x2-4 |
1 |
1-3x |
1 |
2 |
3 |
6x-2 |
3 |
x-2 |
x |
2-x |
x |
2x-5 |
5 |
5-2x |
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