1:1  01-18[数学]杨老师教你对已知条件巧变形，轻松解题 推荐理由：幂的运算公式你能够熟练运用吗？杨老师教你从已知条件出发，灵活运用幂的运算公式，解决你无从下手的困扰！ 讲解人：http://www.jiandan100.cn/teacher/831c4e372041406cacba8139c4f16d8a/ ，北京优秀数学教师，常年辅导竞赛班。 题面：若  ，用x的代数式来表示y本部分内容设定了隐藏,需要回复后才能看到  跟帖分享你的答案，即可看到正确答案和解析！别忘了回帖后再点进来查看答案哦~对已知条件合理变形，巧用公式！ ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 查看更多本年级每周一题，请点击：http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=378& 浏览本期“简单学习电子周报”完整目录：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=658520 |
|
|
![20天大作战[2015]](https://bbs.jd100.com/attachment/medal/cec543c13f7ea1b.jpg "20天大作战[2015]"){kind=small}
![20天大作战[2014]](https://bbs.jd100.com/attachment/medal/465e7ccd53045d5.png "20天大作战[2014]"){kind=small}
![28天勇士[春]](https://bbs.jd100.com/attachment/medal/13d5b846139de25.png "28天勇士[春]"){kind=small}
![21天勇士[春]](https://bbs.jd100.com/attachment/medal/557cbed59379b9b.png "21天勇士[春]"){kind=small}
![14天勇士[春]](https://bbs.jd100.com/attachment/medal/0a2a8be87813938.png "14天勇士[春]"){kind=small}
![7天勇士[春]](https://bbs.jd100.com/attachment/medal/7b734d35544b9d3.png "7天勇士[春]"){kind=small}
![28天勇士[寒假]](https://bbs.jd100.com/attachment/medal/f7cb21a2bdf0790.jpg "28天勇士[寒假]"){kind=small}
![21天勇士[寒]](https://bbs.jd100.com/attachment/medal/cda474e823b15b8.jpg "21天勇士[寒]"){kind=small}
![14天勇士[寒]](https://bbs.jd100.com/attachment/medal/9aacf8cc0ea8134.jpg "14天勇士[寒]"){kind=small}
![7天勇士[寒]](https://bbs.jd100.com/attachment/medal/3ae915c994fd934.jpg "7天勇士[寒]"){kind=small}
![勇不止步[春]](https://bbs.jd100.com/attachment/medal/f783eb36b20a4e2.jpg "勇不止步[春]"){kind=small}
![勇不止步[夏]](https://bbs.jd100.com/attachment/medal/d81a441ef64b068.jpg "勇不止步[夏]"){kind=small}
![7天勇士[暑]](https://bbs.jd100.com/attachment/medal/8ad8dbd20210831.jpg "7天勇士[暑]"){kind=small}
![14天勇士[暑]](https://bbs.jd100.com/attachment/medal/ccbd3226d78250f.jpg "14天勇士[暑]"){kind=small}
![21天勇士[暑]](https://bbs.jd100.com/attachment/medal/63814ff34bb2a24.jpg "21天勇士[暑]"){kind=small}
![28天勇士[暑]](https://bbs.jd100.com/attachment/medal/e87f38d2f0151f0.jpg "28天勇士[暑]"){kind=small}
![35天勇士[暑]](https://bbs.jd100.com/attachment/medal/bdf9a316a9af31b.jpg "35天勇士[暑]"){kind=small}
![42天勇士[暑]](https://bbs.jd100.com/attachment/medal/a0f25f6f396ba8a.jpg "42天勇士[暑]"){kind=small}
![49天勇士[暑]](https://bbs.jd100.com/attachment/medal/611dbeb8ac74943.jpg "49天勇士[暑]"){kind=small}
|
沙发#
发布于：2016-07-30 15:12
看看看看看
|
|
|
板凳#
发布于：2015-11-28 10:16
老师讲得很喜欢
|
|
|
地板#
发布于：2015-06-13 19:58
y=x平方-2x+4
|
|
|
4楼#
发布于：2014-12-14 19:33
 |
|
|
|
5楼#
发布于：2014-09-16 20:49
7楼，牛！还可以2的m次方=x-1 代入
|
|
|
6楼#
发布于：2014-08-15 09:54
ew
|
|
|
7楼#
发布于：2014-01-27 14:58
....................
|
|
|
|
8楼#
发布于：2013-06-12 12:44
y=3+x2-2x-1+1=x2-2x+2
|
|
|
|
9楼#
发布于：2013-06-10 18:48
y=x的平方-2x+4
|
|
上一页
下一页
