解方程:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a595a310f322d825a03af12b6402b853.png)
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a595a310f322d825a03af12b6402b853.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccfbbc513adf6f7eea45c1eb7c292ba.png)
更新时间:2022-09-21 19:42:35
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解答题-问答题
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适中
(0.65)
【推荐1】如图,在
中,
,
,点P从A点出发,沿着
边以每秒
的速度向B点运动;同时点Q从C点出发,沿
边以每秒
的速度向A点运动,当P点到达B点停止运动,Q点随之停止运动,设运动的时间为
.
(1)请用含x的字母表示:
.
(2)当x为何值时,
?
(3)
与
能否相似?若能,求出
的长;若不能,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0d3bfba0b8a0b26c6f084d545ecb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09742010b409a7eedbafe316da26df1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fa1b2125be1791c24ade1a4e180b31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/5/8c3d22f0-b507-4b61-815a-5f836eda38fa.jpg?resizew=156)
(1)请用含x的字母表示:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbc9c4e4db6374d5ba4c5dec8747442.png)
(2)当x为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7b5caf93535240f8e073fd0a2bcff2.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec26d81361e13a37bcf3c95db0ee89b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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