若x,y,z是有理数,且x+根号2y+根号3z=1,则x+2y+3z=?
如果,根号x-3+| y-2 |+z^2=2z-1 求 (x+z)^y
若x,y,z均为实数,且(x-1)²+|y+2|+根号(z-3)²=0则x,y,z的值分别为?
已知x,y,z属于R+(正实数),且xyz(x+y+z)=4+2*根号下3,则(x+y)(y+z)的最小值是?
根号x+根号y-1+根号z-2=1/2(x+y+z),求x,y,z的值
若x,y,z是有理数,x+√2y+√3z=1,则x+2y+3z=?
若x、y、z、是有理数,则X+2的平方根乘以Y+3的平方根乘以Z=1,求X+2Y+3Z=?
已知x、y、z是三个非负有理数,且满足3x+2y+z=5,x+y+z=2,若s=2x+y-z,则s的最大值和最小值的和是
设x,y,z是非零实数,且x^2+4y^2+z^2-3xy=2z根号(xy),则x+y+z/2z-x的值等于?
若|x-8y|+(4y-1)^2+根号8z-3x=0,求根号2x+y-根号3z的值
已知x>根号x-5+根号5-x+x且|y²-36|+根号2x-y-z=0,求根号y-x+根号z的值
1.若/x-3/+(2x-y)²+根号y+z=0,求x,y,z的值.
实数x,y,z满足x=y+根号2,2xy+2*根号2*z*z+1=0,则x+y+z等于多少