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1 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4704f3fb3367052e372a889d05d5744.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326c1ff827655c944cdc92c63e969b67.png)
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2 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e38d60b24d42830b3152dfb1de5ad2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec3df3b00284a7db0614c32ed9d7d0e.png)
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3 . (1)设
,且
.求
的值;
(2)已知
,
,用
及
表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7a2d47e9093dfae74059003138b923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757eb3f55cff1e6fef064db4efae9e28.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a08a2a5540efcdb5a77aa4ea3049884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57115371320bf8c2b5cde136392696c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1776529b7dacd5270be4e387874205f.png)
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4 . (1)已知
、
、
均为正数,且
,求
的值;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8310f387f5f28b11eb4669e666f3290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f132a9de803f56cb7ac47c4ae6f46ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abbec70cbfb404c93808bea3b344f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c4be42a6f5f0af3c1090506f0050c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a16aaec2ecb06b230cf538d5065e6c.png)
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5 . 计算:
(1)
;
(2)计算:
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7da49d1a9d1b62b18a9784b4a0ad6f.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebb4c17d0332568ed219addea191f27.png)
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6 . 求下列式子的值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210d84e893467ecb71ea3fa56e8d837.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210d84e893467ecb71ea3fa56e8d837.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d869d17d1d45c913abe548772812600a.png)
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7 . 计算下列各式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5524832c17e2c8cf9750894b48adfe.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98bd3932eaa81656abaf8824b37705d9.png)
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8 . 求值
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b60a9cc4362090b513c4d0cd21e618.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b60a9cc4362090b513c4d0cd21e618.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231f08137999b6ad2870dd88371cd261.png)
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9 . 下列计算结果为2的式子是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4990732c17d4d0db9f69bc6292e417a1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196d2f78e112c9203eb08d11af73db70.png)
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