1 . 已知
,
是方程
的两根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22c2ddd5044a27e5e53d86d6b93bbfa.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7525c9480d4b7ac129996dbd7b1cb7cb.png)
______ .
![](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/e20ac62f808bd32a4d6fcbe4ae681548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22c2ddd5044a27e5e53d86d6b93bbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7525c9480d4b7ac129996dbd7b1cb7cb.png)
您最近一年使用:0次
2022·全国·模拟预测
2 . 已知
,
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cacc22a6f426baba5191918d69e368b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f552ba6627d6bbd04c5f5f7ed534a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次