已知x+3y+5z=0,2x+3y+z=0,xyz≠0.求(2y-x)(2y+x)÷z2的值.
已知x+3y+5z=0,2x+3y+z=0,xyz≠0.求(2y-x)(2y+x)÷z2的值.
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{4x-5y 2z=0/x 4y-3x=0(xyz不等于0),求x:y:z:d的值
设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3的值
已知x+y-7z=0 x-2y+5z=0(xyz不等于0),求x+2y-z/y-2x+12z
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2X+5Y+4Z=0,3X+Y-7Z=0,且XYZ不等于0,求(X+Y+Z)/(2X-3Y+4Z)的值
已知|x+(-2)|+|y+3|+|z|=0,求x+y+z的值.
已知x+y+z=0,求多项式x^3+x^2z-xyz+y^3的值
已知方程组{2X-Y+3Z=0,X-3Y+Z=0(XYZ≠0),求3Y分之4X+2Z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2x+3y-4z=0,3x+4y+5z=0,求x+y+z/(除以)x-y+z的值.