(1)已知
,
为实数,且
,求
,
的值.
(2)已知实数
满足
,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/36e9518f9bf4137efb3a10762dec7aa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)已知实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4c065bc3b6dcfecc63cee51430301c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f6b5c87d73cbd3ad4e8e51ae5cd924.png)
23-24八年级下·广西玉林·期中 查看更多[3]
广西玉林市玉州区2023-2024学年八年级下学期期中考试数学试题(已下线)第18讲 二次根式(3大考点+10种题型+强化训练)-【帮课堂】2023-2024学年八年级数学下册同步学与练(苏科版)(已下线)专题01 二次根式(九大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期末真题分类汇编(山东专用)
更新时间:2024-05-31 09:58:14
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解答题-作图题
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适中
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【推荐1】如图1,在平面直角坐标系中,点A、B在坐标轴上,其中A(0,a),B(b,0)满足|a﹣3|+
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/65f5957a-d507-4e3a-a6d7-f3ab9a61470a.jpg?resizew=228)
(1)求A、B两点的坐标;
(2)将线段AB平移到CD,点A的对应点是C,点B的对应点是D,且C、D两点也在坐标轴上,过点O作直线OM⊥AB,垂足为M,交CD于点N,请在图1中画出图形,直接写出点C、D的坐标,并证明MN⊥CD.
(3)如图2,将AB平移到CD,点A对应点C(﹣2,m),连接AC、BC,BC交y轴于点E,若△ABC的面积等于13,求点E的坐标及m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7b5b2334f861cdf491920dc00777a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/65f5957a-d507-4e3a-a6d7-f3ab9a61470a.jpg?resizew=228)
(1)求A、B两点的坐标;
(2)将线段AB平移到CD,点A的对应点是C,点B的对应点是D,且C、D两点也在坐标轴上,过点O作直线OM⊥AB,垂足为M,交CD于点N,请在图1中画出图形,直接写出点C、D的坐标,并证明MN⊥CD.
(3)如图2,将AB平移到CD,点A对应点C(﹣2,m),连接AC、BC,BC交y轴于点E,若△ABC的面积等于13,求点E的坐标及m的值.
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解答题-问答题
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适中
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【推荐2】若b=
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解答题-计算题
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适中
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【推荐1】阅读与思考
请仔细阅读下列材料,并完成相应的任务.
,
.像上述解题过程中,
与
、
与
相乘,积不含有二次根式,我们可将这两个式子称为互为有理化因式,上述解题过程被称为分母有理化.
(1)
的有理化因式是__________;
的有理化因式是__________.
(2)写出下列式子分母有理化的结果:
①
__________;
②
__________.
(3)计算:
.
请仔细阅读下列材料,并完成相应的任务.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f3371a7cd68df77ed772e308bf9d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c531af5c5b65e6c3191f73e31b472092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cdf25a1a79002ec3454d7a30c8bdb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a0af55f83715db9cf7d3fd9ff29806.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef812f839622326a7d7027cc806aaeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26447a021b6009e05cdb6a7588b2768c.png)
(2)写出下列式子分母有理化的结果:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64566f56ccd1f265d273d75bd0bb7038.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbd1795c17cdfa36c7b51073f00ab817.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293465ab812b2d4b535d62c935fbe78c.png)
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