a-1 |
1 |
ab |
1 |
(a+1)(b+1) |
1 |
(a+2)(b+2) |
1 |
(a+2004)(b+2004) |
a-1 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2005×2006 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
2005 |
1 |
2006 |
1 |
2006 |
2005 |
2006 |
5-a |
x2-18 |
|
A.14 | B.16 | C.14或22 | D.16或22 |
A.3对 | B.4对 | C.5对 | D.6对 |
8-2(x+3) |
1 |
xy |
1 |
(x+1)(y+1) |
1 |
(x+2)(y+2) |
1 |
(x+2005)(y+2005) |
ab-2 |
1 |
ab |
1 |
(a+1)(b+1) |
1 |
(a+2)(b+2) |
1 |
(a+1999)(b+1999) |
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