1 |
1×3 |
1 |
2 |
1 |
3 |
1 |
3×5 |
1 |
2 |
1 |
3 |
1 |
5 |
1 |
5×7 |
1 |
2 |
1 |
5 |
1 |
7 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
(2n-1)×(2n+1) |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
5 |
1 |
5 |
1 |
7 |
1 |
2n-1 |
1 |
2n+1 |
1 |
2 |
1 |
2n+1 |
n |
2n+1 |
a+2 |
a-2 |
a-2 |
a+2 |
8a |
a2-4 |
m+2n |
n-m |
n |
n-m |
2m |
m-n |
x2 |
x-1 |
12 |
m2-9 |
2 |
3-m |
3 |
x+2 |
1 |
2-x |
2x |
4-x2 |
5 |
6 |
x2-9 |
1 |
x+3 |
4 |
x2 |
x-2 |
4x |
x-2 |
4 |
x-2 |
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