(x-1)²+(2y-1)²=0
所以x=1,y=1/2
2x-y=2分之3
所以2x-y的平方根是±2分之根号6
已知实数想,x,y 满足x^2+4y^2-2x-4y+2=0,求2x-y的平方根
已知实数想,x,y 满足x^2+4y^2-2x-4y+2=0,求2x-y的平方根
数学人气：455 ℃时间：2019-08-21 20:36:58
优质解答
我来回答
类似推荐
猜你喜欢
- 1l will go to work early tomorrow morning. can you_your baby sister,tom?单项选择A wear B put C dress D have
- 2needn't 和 don't need 的区别
- 3谐字去掉言字旁加个提手旁念什么?
- 4Tom and Mary have already climbed the Great Wall.{改为一般疑问句｝
- 5当线圈中的磁通增加时,感应磁场的方向（ ） 当线圈中的磁通减小时,感应磁场的
- 6英语求教.比如： I'm not feeling well,I don't feel well.为什么WELL在两句中形式不一样?
- 7连词成句. would try to have you a like? helpful at home you are? I can cook the meals not
- 8一个圆的半径是2厘米,一个正方形的边长是2厘米,圆的周长和正方形的周长
- 9The flowers will die without water.的同义句
- 10从高处向远看 、恭恭敬敬的看、偷偷摸摸的看,聚精会神的看,求词语