已知
=b+1
(1)求a的值;
(2)求a2﹣b2的平方根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7257ddf158944ec0f9d6f3243ec9df97.png)
(1)求a的值;
(2)求a2﹣b2的平方根.
更新时间:2019-03-14 07:53:18
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【知识点】 利用算术平方根的非负性解题解读
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,已知点
、
,满足
,点P是线段
上一动点,D是x轴正半轴上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/23f37226-e71c-40f0-b358-c35976693d37.png?resizew=352)
(1)
的长为____________;
(2)若
,求D点坐标;
(3)作
于E,当点P在线段
上运动时,
的长是否变化?若变化,请说明理由,若不变,请求出其值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6991563453cd366d99513c393d1ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7255cbfbc86408b7cd865e89e5de0fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce88017dfff47cee46bb18204a9c66c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637541af30c2caad516963ba2dad3d3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/23f37226-e71c-40f0-b358-c35976693d37.png?resizew=352)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48d96fbe995310aa5700fc5ec3e785f.png)
(3)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在平面直角坐标系中,点
、
在坐标轴上,其中
、
满足
.
、
两点的坐标;
(2)将线段
平移到
,点
的对应点为
,求线段
是由
怎样平移得到的?并写出点
的坐标;
(3)在(2)的条件下,求三角形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296c31eaede57efe89ffb83f02ad4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5612d598e27ac2ce0ab89fb63538bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672045daff7a72165d72031dc7dc0166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581d9c84f7b2c7840619169b2c5811f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)在(2)的条件下,求三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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