题目
题型:解答题难度:一般来源:临夏州
2007 |
2008 |
2008 |
2009 |
答案
2007×2009 |
2008×2009 |
(2008-1)(2008+1) |
2008×2009 |
20082-12 |
2008×2009 |
b=
20082 |
2008×2009 |
20082-12<20082(5分)
∴a<b(6分)
说明:求差通分,参考此标准给分.若只写结论a<b,给(1分).
核心考点
举一反三
2007 |
2008 |
2008 |
2009 |
2 |
3 |
3 |
4 |
2007 |
2008 |
2008 |
2009 |
2007×2009 |
2008×2009 |
(2008-1)(2008+1) |
2008×2009 |
20082-12 |
2008×2009 |
20082 |
2008×2009 |
2007 |
2008 |
2008 |
2009 |
2 |
3 |
3 |
4 |