已知X+4Y-3Z=0,4X-5Y+2Z=0(XYZ≠0),求(3x²+2xy+z²)/(x
已知X+4Y-3Z=0,4X-5Y+2Z=0(XYZ≠0),求(3x²+2xy+z²)/(x
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
已知方程组﹛x+4y-3z=0 4x-5y+2z=0 ,xyz≠0,求﹙3x²+2xy+z²﹚÷﹙x
已知一方程组:x-3y+7z=0与x-2y+4z=0(xyz≠0),求x:y:z.
(x-3y+z)^2+/ 5x-4y+z/=0 且xyz≠0 xy+yz+zx/x^2+y^2+z^2
已知x+4y-3z=04x-5y+2z=0,xyz≠0,求3x2+2xy+z2x2+y2的值.
已知2x-4y-5z=0,-3x+y+4z=0,(xyz≠0)则x:y:z=________
已知x+4y-3z=0 4x-5y+2z=0 xyz不等于0 求(x的平方+y的平方)除以《3(x的平方)+2xy+z的
已知4x-5y+2z=0,x+4y-3z=0,求(x²+y²+z²)/xy+yz+xz
已知方程组4x-y+3z=0 2x+y+6z=0且xyz不等于0,则x/y+y/z+z/x是多少
已知实数x,y,z满足:xyz不等于0,2x+3y-13z=0,x-2y+4z=0,求(x^2+y^2-z^2)/(xy
已知方程组{2X-Y+3Z=0,X-3Y+Z=0(XYZ≠0),求3Y分之4X+2Z的值