1 |
5 |
1 |
6 |
5 |
6 |
5 |
6 |
9 |
5 |
1 |
3 |
1 |
2 |
1 |
3 |
1 |
4 |
2 |
3 |
3 |
4 |
1 |
2 |
3 |
4 |
2 |
3 |
9 |
11 |
1 |
9 |
9 |
11 |
9 |
11 |
1 |
6 |
5 |
6 |
5 |
6 |
9 |
5 |
1 |
3 |
3 |
2 |
1 |
2 |
1 |
3 |
1 |
4 |
2 |
3 |
3 |
4 |
1 |
2 |
3 |
4 |
2 |
3 |
2 |
3 |
3 |
4 |
1 |
2 |
3 |
4 |
2 |
3 |
1 |
2 |
9 |
11 |
1 |
9 |
1 |
9 |
9 |
11 |
1 |
9 |
1 |
11 |
1 |
11 |
科目:初中數(shù)學 來源: 題型:
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
9×10 |
1 |
1 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
9 |
1 |
10 |
1 |
1 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
9 |
1 |
10 |
1 |
10 |
9 |
10 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
19×21 |
1 |
1×4 |
1 |
4×7 |
1 |
7×10 |
1 |
(3n-2)(3n+1) |
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