(x-z-20)²+(3x-6y+3)²+|3y+2z-8|=0 求x z y
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
(x-z-20)²+(3x-6y+3)²+|3y+2z-8|=0 求x z y
已知x²+y²-6x+2y+|z+3|+10=0,求x+z-y的值
若|x-2|+|3x-6y|+(3y+z)²=0,求x+y+z的值
已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y
x+y-z=6 x-3y+2z=0 3x+2y-z=0 求x、y、z 要过程
已知x^3+y^3-6x+2y+z+3+10=0,求(x-y+z)(x+y-z)的值.(z+3)是绝对值
已知有理数x,y,z满足|x-z-2|+|3x-6y-7|+(3y+3z-40)^2=0,求x,y,z的值
已知有理数x、y、z满足条件|x-z-2|+(3x-6y-7)^2+|3y+3z-4|=0,求x、y、z
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z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3x-2y-z=0,x+4y-3z=0,求3x²+y²/4x²-y²+z