已知y=根号x-3+根号3-x-5,求x-y的立方的平方根
人气:189 ℃ 时间:2020-06-18 10:38:11
解答
根据二次根式的意义可知:
x-3≥ 0,x≥ 3;
3-x≥ 3,x≤3.
故x=3,y=0+0-5=-5.
所以,(X-Y)的立方根为:8的立方根=2.
推荐
- 1.若X-根号y的绝对值+根号X的立方-27=0,求y的X方的平方根.
- 已知x,y是实数,且(x+y-1)的平方与 根号(2x-y+4)互为相反数,求x方+y的立方的平方根
- 已知根号下y-1的立方和根号下3-2x的立方互为相反数,且x-y+4的平方根是他本身,则X()Y()
- 已知x−y+3与x+y−1互为相反数,求(x-y)2的平方根.
- 若3次根号3X-7和3次根号3Y+4互为相反数,根号M-2和根号1-M+N也互为相反数字,求X+M+Y+N的平方根和立方
- time_____,we will visit some other interesting places
- The desk has two d_____ and there are some books in them. Your r_____is big and bright.
- 16. This is military _________, and no body is allowed to get in without permission.
猜你喜欢