解方程或方程组.
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc191eec8eac0006a9e26d46ebb18b9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59ec0c44248b7870f8437295c589b42.png)
更新时间:2022-05-24 13:16:23
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解答题-问答题
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适中
(0.65)
【推荐1】解下列方程
(1)(x+1)2﹣9=0
(2)(x﹣1)3=8.
(1)(x+1)2﹣9=0
(2)(x﹣1)3=8.
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解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,在
中,
,D为
上一点,且
,过D作
,连接
,且
.
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd657e48b15b9b54a55817e2c26b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b3e9a99b5b8258baab51f66d1a48ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e92f48e9bfe12d145f7d2a2f0360d0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/27/4f37d74b-6767-43b7-be6e-0fe3ce8448c7.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fc8b2e9ba57d7b586cbd6121127e59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e7917dd4f9ef287f39003509fcb867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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