1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
n(n+1) |
n |
n+1 |
n |
n+1 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
(2n-1)(2n+1) |
17 |
35 |
1 |
1-x |
1 |
x2 |
5 |
2 |
5 |
3 |
5 |
2 |
5 |
3 |
7 |
3 |
7 |
4 |
7 |
3 |
7 |
4 |
9 |
2 |
9 |
7 |
9 |
2 |
9 |
7 |
a+b |
a |
a+b |
b |
a+b |
a |
a+b |
b |
a+b |
a |
a+b |
b |
a+b |
a |
a+b |
b |
1 |
100 |
1 |
99 |
1 |
98 |
1 |
4 |
1 |
3 |
1 |
2 |
1 |
100 |
1 |
100 |