摘要: (-1)2005+(-1) 2004+(-1)2003+(-1)2002+(-1)2001的值是( ) A.3 B.-2 C.-1 D.1
网址:http://m.1010jiajiao.com/timu3_id_641181[举报]
观察下列二次根式的运算:
=-1+
=-
+
=-
+
…
=-
+
=-
+
请利用上面的规律计算:(
+
+
+…+
+
)(1+
).
查看习题详情和答案>>
| 1 | ||
1+
|
| 2 |
| 1 | ||||
|
| 2 |
| 3 |
| 1 | ||||
|
| 3 |
| 4 |
| 1 | ||||
|
| 2004 |
| 2005 |
| 1 | ||||
|
| 2005 |
| 2006 |
请利用上面的规律计算:(
| 1 | ||
1+
|
| 1 | ||||
|
| 1 | ||||
|
| 1 | ||||
|
| 1 | ||||
|
| 2006 |