(1)计算:
.
(2)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80cb4215232e1a84be1eeb953c2d75b.png)
(2)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1296efc95233a932bd060e3666909996.png)
更新时间:2023-03-11 14:55:18
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解答题-计算题
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适中
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【推荐2】(1)计算:
.
(2)解方程组:
.
(3)解不等式组
,并将解集在数轴上表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d1ffb85d3ccc74673be326a63f5b5.png)
(2)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56623c7a624873c9c777a6ab3f7c60bd.png)
(3)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54ee201b3b0e3204715acf4d95d71ac.png)
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解答题-计算题
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名校
【推荐2】实数a、b在数轴上的位置如图所示,请化简:|a|﹣
﹣
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c0f57ea6e7089fb7b417818f664b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85abb79950f639848e7365b4706032f2.png)
![](https://img.xkw.com/dksih/QBM/2018/3/20/1906128352567296/1906973738901504/STEM/4bd0401c02ca40049d58cc6424865e0f.png?resizew=241)
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解答题-作图题
|
适中
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【推荐3】在学习了《勾股定理》和《二次根式》后,八年级同学以“已知三角形三边的长度,求三角形面积”为主题开展了数学活动.图①是
的正方形网格,每个小正方形的边长均为1,每个小正方形的顶点称为格点.在图①中画出
,其顶点
,
,
都是格点,同时构造正方形
,使它的顶点都在格点上,且它的边
,
分别经过点
,
,他们借助此图求出了
的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/79dc3c22-54db-442d-9ff9-fade59e7f627.png?resizew=429)
(1)在图①中,所画出的
的三边长分别是
______,
______,
______;
的面积为______.
(2)在图②所示的正方形网格中画出
(顶点都在格点上),使
,
,
,并求出
的面积.
(3)若
中有两边的长分别为
,
,且
的面积为2,请直接写出它的第三条边的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/79dc3c22-54db-442d-9ff9-fade59e7f627.png?resizew=429)
(1)在图①中,所画出的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在图②所示的正方形网格中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2908a3e03f724d93ada9dce67ae4cf61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7316a656313771a5dd28285076037a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086f32a5cd3e16d41b6a5b63c82ac657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,已知
为
的直径,点
在
上,
的平分线交
于点
,过点
作
的垂线,垂足为
,直线
与
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/2021/5/7/2715956448165888/2725980732792832/STEM/117375ef-882a-4aca-bce0-62ab7c62c12b.png)
(1)判断直线
与
的位置关系,并说明理由;
(2)若
,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a852c13de65877be1f43ac1f88f179d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2021/5/7/2715956448165888/2725980732792832/STEM/117375ef-882a-4aca-bce0-62ab7c62c12b.png)
(1)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ee1b76ab1d6f58b19d852a3928e724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次