题目
题型：填空题难度：一般来源：不详
答案
|
解得：x=1，y=
| 1 |
| 6 |
则x2+y2=1+
| 1 |
| 36 |
| 37 |
| 36 |
故答案填：
| 37 |
| 36 |
核心考点
举一反三
| 1 |
| a |
| 1 |
| b |
| 1 |
| c |
| a2-4 | ||
1+
|
（2）若|a-5|和（b+4）2互为相反数，则[
| 4ab |
| a-b |
| a |
| b |
| b |
| a |
| 1 |
| a |
| 1 |
| b |
______．
| n |
| (x2-1)2+ 题型：xy|-2| |
| (x+1)(y+2) |
| 1 |
| xy |
| 1 |
| (x+1)(y+1) |
| 1 |
| (x+2001)(y+2001) |
A．
| B．
| C．
| D．
|