计算下列各式:
(1)若
,求
的值;
(2)
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec04f1e51e855eef13f57ccb8594d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757eb3f55cff1e6fef064db4efae9e28.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9ef821df33b7ab824462d84b1051d7.png)
更新时间:2019-12-27 12:01:24
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解答题-计算题
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较易
(0.85)
名校
【推荐1】化简、求值
(1)计算:
;
(2)已知
,求
的值;
(3)已知
,求
的值.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4bdbf0480674352895814cf8cf4eb2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d08a92e6ed65682f54180581ed304a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e996733a3bc36c904e37365141bdf9.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1201456f325525ffadfb41c82e4553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec374754437b62aef65b36771511f2ae.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】(1)计算:
;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f80a8b1901be65d897433e9e0388d32.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb19a58c148ed391c62f754900384cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff3835bad293608f13fae5fa92afaf41.png)
您最近一年使用:0次
【推荐2】请解决下列问题:
(1)已知
,求
的值;
(2)计算
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c03d00b356a9fc29a98684cb7af5b6.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae2691552b3d96a25c3f56a5780129f.png)
您最近一年使用:0次