求下列各式中的x.
(1)x2=49;
(2)
.
(1)x2=49;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125f40582beae4c3a0c1f1d21b927c69.png)
21-22七年级下·云南大理·期中 查看更多[4]
云南省大理白族自治州宾川县金牛镇第二初级中学2021-2022学年七年级下学期期中数学试题(已下线)专题11 利用平方根立方根的概念解方程50道-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(人教版)(已下线)专题01 平方根与算术平方根(六大类型)(题型专练)-2023-2024学年七年级数学上册《知识解读·题型专练》(浙教版)(已下线)第01讲 平方根与算术平方根(知识解读+真题演练+课后巩固)-2023-2024学年八年级数学上册《知识解读·题型专练》(苏科版)
更新时间:2022-09-22 12:58:42
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解答题-计算题
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适中
(0.65)
【推荐1】计算
(1)
(2)
(3)9x2-16=0
(4)(-2+x)3=-216
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b69f41c5d764b07e3308702e4f73a1c.png)
(2)
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(3)9x2-16=0
(4)(-2+x)3=-216
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】如图,已知M是线段AB的中点,点P在MB上,分别以AP,PB为边作正方形APCD和正方形PBEF.设
,正方形APCD和正方形PBEF的面积之差为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/5a0c80b1-83a8-4a9a-9a9a-d81357139018.jpg?resizew=165)
(1)直接写出AP=________, BP=_________(用含有a,b的代数式表示)
(2)用含
,
的代数式表示
(结果要化简),并求出当
时
的值.
(3)若
,设
,是否存在有理数
,使得
能化简为
?若能,请求出满足条件的
值;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd66720ed18fa88f180c3457fdd5997.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/5a0c80b1-83a8-4a9a-9a9a-d81357139018.jpg?resizew=165)
(1)直接写出AP=________, BP=_________(用含有a,b的代数式表示)
(2)用含
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22b3f2dae92cc1caf59199552312865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/062b4214b918daec0e6db2201f050ae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828c74a9f47e179c03ab10ff9963c792.png)
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