已知(3x+y-5)2+
=0,求x+y的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830633b5dc54cf751e99dc3fd2ef7293.png)
更新时间:2018-10-19 19:13:18
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】如图,在平面直角坐标系中,点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375b70bc994f7fbdba72ea433d201588.png)
.线段
与
轴、
轴围成三角形
,将三角形
向右平移得到三角形
,当点
到达点
时停止平移,平移终止前,线段
与线段
相交于点
.
的坐标为________________,
的坐标为________________;
(2)平移过程中,点
把线段
分成两条线段差为1时,求点
坐标.
(3)如图2,连接
之间是否存在确定的数量关系?若存在,请求出来;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba00fd8222afdd035f04a773af74271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375b70bc994f7fbdba72ea433d201588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f8d327919d85cb0374ef90bd825e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/1b11c34bb0c73e6a9d3a23fc5f36e3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)平移过程中,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b034c52c980590c5b460da2758f5f89.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,已知
,点
,
,
.
(2)若点
在第二象限内,请用含m的式子表示四边形
的面积:
(3)在(2)的条件下,若四边形
的面积与
的面积相等,求出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585a6df7ba82256eb56b2c4617c9e21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296c31eaede57efe89ffb83f02ad4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5612d598e27ac2ce0ab89fb63538bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7089a4e568ed92b1230af589f4d47be.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695c41e496a4bfaf4aeee2bc5137ec4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704d08fe16b2be56a17340ec0342ae8e.png)
(3)在(2)的条件下,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704d08fe16b2be56a17340ec0342ae8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】解方程组:
(1)
(用代入消元法)
(2)
(用加减消元法)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6af9af6b298ba2481d0e5d48b5cb0a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f9ddd1e027f47b97e7b59c255a8768.png)
您最近一年使用:0次