已知xyz满足2x-3y-z=0,x+3y-14z=0.求x:y:z的值
已知XYZ满足方程组 X+Y-Z=6 Y+Z-X=2 Z+X-y=0 求X Y Z的值
若xyz不等于0,且满足(y+z)/x=(x+z)/y=(x+y)/z,求(y+z)(x+z)(x+y)/xyz的值
已知x,y,z同时满足2x-3y=8,3y+2z=0,x-z=-2,试求xyz的值
已知,x,y,z同时满足2x+3y=8,9y+2z=0,x-z=-2,求xyz的值
已知有理数x,y,z满足(x-z-2)^2+(3x-6y-7)^2+|3y+3z-4|=0求xyz的值
已知xyz满足方程组x+4y-3z=0,求x:y:z的值 4x-5y+2z=0
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
已知xyz满足|3x-2y+z|+|2x+y+2z|=0(xyz不等于o)求x+y除以z
已知有实数x,y,z满足x^2+4y^2+z^2-2x-12y+4z+14=0,求xyz的值.
设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3的值
已知实数xyz满足|x-2y|+2√(2y+z)+z-2z+1=0,求x+y+z的值
已知实数xyz满足x/y+z+y/z+x+z/x+y=1求x^2/y+z+y^2/z+x+z^2/x+y的值