已知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
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)
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
已知2x-3y+z=0,3x-2y-6z=0,且xyz不等于0,求2x^+y^-z^分之x^+y^+z^的值
已知方程组x-3y-2z=0 2x-y+z=0 且xyz≠0,求x:y:z
已知方程组2x-3y+z=0 3x-2y-6z=0 且xyz不等于0求 x:y:z
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不等于0,且x+2y-z=0,7x-y-z=0,求x+y+z/2x-y-z的值.
已知丨X+2丨+(Y-3)² =0 且(5分之X-2Y+Z)+5=½Y+X+Z 求Z