若2x-3y+z=0,3x-2y-6z=0,且xyz≠0,求2x²+y²-z²分之x
已知2x-3y+z=0,3x-2y-6z=0且xyz≠0求2x²+y²-z²分之x
已知x-2y+z=0,3x+6y-z=0(xyz≠0),求2x²+y²/x²+y²
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
数学题用2元1次解已知道4X-3Y-6Z=0 X+2Y-7Z=0且XYZ都不等于0,求X+2Y+3Z分之3X+2Y+Z的
已知:(x+y-z)/z=(x-y+z)/y+(y+z-x)/x,且xyz≠0,求代数式[(x+y)(y+z)(x+z)
若1/2x=1/3y=1/4z且xyz不等于0,求x:y:z
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
若x+2y-9z=0,z-3y-5z=0,(xyz≠0)求:x²-4y²+9z²分之(2x
若xyz不等于0,且|2x+3y-z|+(3x-y-z)^=0,则代数式z分之x+y=
设X+Y+Z=0求X^3+X^2Z-XYZ+Y^2Z+Y^3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
若xyz不等于0,且(y+z)/x=(z+x)/y=(x+y)/z,求(y+z)(z+x)(x+y)/xyz的值?