计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39301d1616488b68391818389fad3bf5.png)
更新时间:2020-08-18 18:38:05
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解答题-问答题
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【推荐1】已知不等式组
.
(1)求不等式组的解集;
(2)若n是不等式组的非负整数解,求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16db169924fe1c67a0fb314e31fe1e46.png)
(1)求不等式组的解集;
(2)若n是不等式组的非负整数解,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5214be4ab4c116b6d8beb768db721cfc.png)
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解答题-计算题
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(0.85)
【推荐1】小明在探究二次根式时发现了两个有趣的变形:一些分母含有二次根式加减的式子也可以分母有理化,如:
;
.
(1)请观察上面的解题过程,直接写出下列各式的结果.
①
______;
②
(
为正整数)
______.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2badc470132f96488affac3c80fb5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5c05cb800f5271377af19a06b955b1.png)
(1)请观察上面的解题过程,直接写出下列各式的结果.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9f38763a553c9e92aaa5b4484a3ed5.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e73c4179a5eff5ce1405f1fec87403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ac2bec71af54ff27cddc558172ed7c.png)
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【推荐2】计算题
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710be775c29b3d4c417415c21b42f8ec.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43300b543d7f22c309a59ed6c480d7b.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbac1e73ca7deebabda8090740474b4.png)
(4)(3﹣π)0﹣
﹣(
)(
)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710be775c29b3d4c417415c21b42f8ec.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43300b543d7f22c309a59ed6c480d7b.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbac1e73ca7deebabda8090740474b4.png)
(4)(3﹣π)0﹣
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde029ac94c601540583c64bc48c17bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650ef902d427468119ea4f00fc2717ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53204688086b1d0111e91cb49fa0ac61.png)
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