(1)解方程:
.
(2)如图,
是
的边
上一点,连接
,已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8fe167b647fa52a28e1275e7d875b9f.png)
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/15ece8677d4b88af304d49ec893ab608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eab162794235d93d1d851dae289eb08.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/3d941a52-65a6-4853-80a3-035b04d2eba9.png?resizew=160)
更新时间:2023-12-31 08:24:07
|
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解答题-问答题
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较易
(0.85)
名校
【推荐2】解下列方程:
(1)(x-3)2-25=0 (2)
(3)
(配方法) (4)x2-7x+6=0
(1)(x-3)2-25=0 (2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be7ce601071e2f6cd1044d8234592b0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c635c1f5234625ff65e5717b84d3f7e7.png)
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解答题-证明题
|
较易
(0.85)
【推荐1】如图是边长为1的小正方形组成的网格,
的顶点都在网格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/629259a8-a597-4bb1-b45d-301a4c597b05.png?resizew=152)
(1)在
上找出一点P.连接
,使得
;
(2)利用“三边对应成比例的两个三角形相似”证明(1)中结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/629259a8-a597-4bb1-b45d-301a4c597b05.png?resizew=152)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637249f6cece18923b1688ab40beaa65.png)
(2)利用“三边对应成比例的两个三角形相似”证明(1)中结论.
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解答题-证明题
|
较易
(0.85)
名校
【推荐2】如图,
为
内一点,过点
作
,
的平行线分别交
于点
,
,连接
并延长交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/53e1f3dc-1c8c-4f93-b15f-940b8768e92a.png?resizew=230)
(1)求证:
.
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb6fd2fa53b92a03d21f208b74e3857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/53e1f3dc-1c8c-4f93-b15f-940b8768e92a.png?resizew=230)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2264da24223fe6459bf20f6f1697dde.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731016f5081dca7e5726598d757c0449.png)
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