先化简,再求值:已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e72f6014a40e11f685816d89a12fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c21fea7dc8101253480cc60a8634d67.png)
23-24八年级上·上海松江·期中 查看更多[2]
更新时间:2023-11-11 05:47:19
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解答题-计算题
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较易
(0.85)
【推荐2】(1)计算:当
时,求
的值.
(2)先化简,再求值:
,其中
满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80236b37de6f299b5ff05d1ff29850c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acde2379923fbabe28f212ac79b895f.png)
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ae9befe911ef51fed10ee9b89228c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a678cd018f89c3518645bc8439805ce.png)
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