名校
解题方法
1 . 已知
,若
分别是方程
的根,则下列说法正确的序号为_____________ .
①
; ②
; ③
; ④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580e60deee78dc56c9d3e7d0e11d27ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e04b5adbacc3b717b716eecdefe01d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948eb26dc27646285335664baad48ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90b02a401d8c60385803dea37807f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ee6ad5e606a5eb687e5d68fefc75ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972126748d2b32b94a1af7fe36af6dad.png)
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