名校
1 . 已知方程
的两根为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c734afaa572240bc8bc1dcfc736641e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99606defee81cacc6652482953b6818c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c734afaa572240bc8bc1dcfc736641e.png)
您最近一年使用:0次
2 . (1)化简![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1054c4dffd56350207c6465fea48be9a.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1054c4dffd56350207c6465fea48be9a.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c76a3c7906a2a468b2bd5b57864a211.png)
您最近一年使用:0次
3 . 设
,
是方程
的两个根,不解方程,求下列各式的值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a446d90a8b1bebe67252b21c12c92c2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86c259be55c611fb6a625a3da4a62a2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a446d90a8b1bebe67252b21c12c92c2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4259d082fc0fbf09850a08b8ad962e.png)
您最近一年使用:0次
名校
4 . 已知
是方程
的两根,计算
=_____________________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a811d144da5fcc2747e3d446f46db4cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4066f5e14834a63191f597d53406a1.png)
您最近一年使用:0次