已知
,则代数式
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4f277d11a202093539883ffeae4445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdeaee3b9af3fead1cfa7bcbc721417b.png)
更新时间:2023-03-20 09:37:25
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【知识点】 数与式
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填空题-单空题
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适中
(0.65)
名校
【推荐1】已知
、
是方程
的两个实数根,则代数式
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cdd6f27334444c1884876b9e4cfe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca9a8dc6e69d8ae86e5233320ecf6e7.png)
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填空题-双空题
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适中
(0.65)
【推荐2】在解方程
时,甲同学看错了
,解得方程的根为
,
;乙同学看错了
,解得方程的根为
,
,则方程中的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a7b78d895784b4af75b962bd40f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb35c769007b54a0204e85a0e5223bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4223bd6ee8f82d59d244371fbcddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9022b9c5b0edd38748bb21a9cdba6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
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