若实数
的一个平方根是-5,
的立方根是-2,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b4cabca58883f8cb02cff114066784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4350514c24acc1943867a341199725d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a989c4fbf0ff34cedb365d2dda47f16.png)
更新时间:2022-05-26 09:32:38
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解答题-问答题
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【推荐1】已知正数
的平方根为
,
的立方根为2.
(1)求
,
的值.
(2)求
的算术平方根.
(3)现有一个长为
,宽为
,厚度为
的长方体铁板,将其加工成一个正方体铁块,求加工后正方体铁块的棱长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221c098ec29f32e8ba525ae633ba7536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b8bee40319fe80e512d221cfe252a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf6dfee4181b3df1eb44e754df4861a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91dc2f96973be2946978809517d0e166.png)
(3)现有一个长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc7a801e2d2fe2dffe6e8aa3e2178ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f552d03a658afcdb420031762c79cae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d9d3b462ff930beed5d197e169cb2a.png)
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名校
【推荐2】已知一个数的两个平方根分别是
和
,求这个数的立方根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b4d3176035989318ed293c25fe6369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca1a604595330cd275a6088f78e945c.png)
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解答题-计算题
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【推荐1】计算:
(1)
.
(2)(x﹣2a)2﹣a(2a﹣x).
(3)
.
(4)化简求值:
,其中m=
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a06cdac876a533ccf1f41e98c1261f7.png)
(2)(x﹣2a)2﹣a(2a﹣x).
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6032ead31b370e388086ecab3d3ab4.png)
(4)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0627a29c89f8cb1d47602ed4cf6fd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
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名校
【推荐1】对于任意实数
,
,定义一种运算※如下:
,例如:
.
(1)若
,求
的取值范围;
(2)已知关于
的方程
的解满足
,求
的取值范围.
![](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/68c050fb52aa9913e9e92c72eefd16b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bde92ead9764d35706d7ee2216d80f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea514c2d2342e335029d439985eae7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe3fab68989cb39a27fc87937c4d10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990fa218a7e4fa2d565350d403280262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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【推荐2】对于整数
,
,
,
,定义
,如:
;
(1)计算:
的值;
(2)当
时,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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fc047e2148eacccbb547690e0e6ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cf16b788f66521ee7272b1917073ad.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e437d363bea573b624a4125b5e6212.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10abe83275c900284cf28c57d75a7da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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