已知方程组﹛x+4y-3z=0 4x-5y+2z=0 ,xyz≠0,求﹙3x²+2xy+z²﹚÷﹙x
已知方程组﹛x+4y-3z=0 4x-5y+2z=0 ,xyz≠0,求﹙3x²+2xy+z²﹚÷﹙x
已知xyz都不为零,且方程组4x-3y-3z=0,x-3y+z=0求x:y:z
已知x/2=y/3=z/4,xyz≠0,求3x/2x+3y-5z的值.
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
已知方程组{2X-Y+3Z=0,X-3Y+Z=0(XYZ≠0),求3Y分之4X+2Z的值
已知一方程组:x-3y+7z=0与x-2y+4z=0(xyz≠0),求x:y:z.
已知xyz满足方程组x+4y-3z=0,求x:y:z的值 4x-5y+2z=0
方程组:x-2y+4z=0,2x+3y-3z=0...xyz不等于0,求(2x+y-z)\(2x-y+z)
已知方程组x+4y-3z=0,4x-5y+2z=0.xyz不等于0,求x的平方+y的平方分之3x的平方+2xy+z的平方
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
已知X+4Y-3Z=0,4X-5Y+2Z=0(XYZ≠0),求(3x²+2xy+z²)/(x