已知x=
,求
-
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d6bd566ec93595b18223c749b748b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9c462aa1f24a76d0b37f1caf1a4311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7423e0f2d07e6789821c4646789e8e9a.png)
更新时间:2017-05-07 16:05:17
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解答题-计算题
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适中
(0.65)
【推荐2】(1)已知
,求代数式
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(2)先化简,再求值:
,其中
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4f32a125419e5c8c0e71dfac47075f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b0677f9432ea0f2b4dd80076e6af36.png)
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7fa5d1b3289d36bdf3bab23ca251f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc12fed7a6f4777c0fccc896e624281.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
名校
【推荐1】(1)先化简,再求值:
,其中
;
(2)
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77aa18fc1dc6b3ed91d6820ba0d56d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33553337521d5e8c3bed5f32d4ff43d5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed7b6bf65efcc0e0c04ab3f4281af4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c4bd68217658e96e826b4ea053c003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5356ee73f1752c9133e1be0461653e9.png)
您最近一年使用:0次