若:X^2-4X+Y+6Y+√ Z-3+13=0求(xy)^z的值
若:X^2-4X+Y+6Y+√ Z-3+13=0求(xy)^z的值
若x-y=6,xy=-8,求代数式(x+y+z)²+(x-y-z)(x-y+z)-2·z(x+y)的值
若xy-z不等于0,且(y+x)/x=(z+x)/y=(y+x)/z,求[(y+z)(z+x)(x+y)]/xyz的值?
若x2-4x+y2+6y+√z-3+13=0,求(xy)z的值.
若x²-4x+y²+6y+√z-2+13=0求(xy)z的次方的值
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
若|x-3|+|y+z|+|2z+1|=0,求xy-yz的值
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
已知3x-4y-z=0 2x+y-8z =0,求(x²+y²-z²)/(xy+yz)的值
若x/3=y=z/4,且xy+xz+yz=76,求2x*x+12y*y+9z*z的值
已知实数x,y,z满足x=6-y,z^2-4z+4=xy-9,求x,y,z的值.
已知实数x,y,z满足x=6-y,z^2-4z+4=xy-9,求x,y,z的值