计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ae2e957b91feda3e3d39c9486adfef.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ae2e957b91feda3e3d39c9486adfef.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b72a93735f80829cc1f75156d42935b.png)
2021八年级下·全国·专题练习 查看更多[2]
(已下线)专题16.5 二次根式加减(知识讲解)-2020-2021学年八年级数学下册基础知识专项讲练(人教版)(已下线)1.4 二次根式的加减法(知识要点+专项练习)-2022-2023学年八年级数学下册同步精品课堂(浙教版)
更新时间:2021-12-22 17:23:08
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解答题-计算题
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适中
(0.65)
名校
【推荐2】已知关于
,
的二元一次方程组
,
(1)求
,
的值(用含
的代数式表示)
(2)若
,
,求
的范围;
(3)在(2)的条件下,化简
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba215e9bc5a0e173342d8780cb1cda0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80e01bb9553faddc862a27bc7ce55fb.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
名校
【推荐2】(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45bdd03394b9c2c6d0da2f1ec358548.png)
(2)解不等式组:
,并将其解集表示在数轴上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45bdd03394b9c2c6d0da2f1ec358548.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46e346946569ef50dc5db5482911bff.png)
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969409925644288/2969492788985856/STEM/cb72352e1641410193dbbb39e7d97e22.png?resizew=357)
您最近一年使用:0次