若x^2-4x+y^2-8y+根号(z-3)+20=0,试求代数式(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|x-8y|+(4y-1)^2+根号8z-3x=0,求根号2x+y-根号3z的值
若x2-4x+y2-8y+√﹙z-3﹚+20=0试求代数式(xy)z次方的值
已知x=3y,z=7y(x≠0),求代数式2x+3y-z分之x+y+z的值
已知3x-4y-z=0 2x+y-8z =0,求(x²+y²-z²)/(xy+yz)的值
已知x=3y,z=7x(x不等于0),求代数式2x+3y-z分之x+y+z的值
若:X^2-4X+Y+6Y+√ Z-3+13=0求(xy)^z的值
若X/3=y/4=z/5,且xy+yz+xz=94,求代数式2X²+12y²+9z² 的值
1.若/x-3/+(2x-y)²+根号y+z=0,求x,y,z的值.
x*-4x+y*+6y+(根号z-2)+13=0,求(xy)z *为2
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x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值