X²-4X+Y²+6Y+(√Z+2)+13=0 求(xy)
X²-4X+Y²+6Y+(√Z+2)+13=0 求(xy)
x*-4x+y*+6y+(根号z-2)+13=0,求(xy)z *为2
已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y
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
已知X Y Z 满足 x-4x+y+6y+√(z+1)+13=0,求代数式 (xy)的值谢谢了,
已知x/3=y/4=z/6,求(xy+yz+xz)/(x²+y²+z²)
若:X^2-4X+Y+6Y+√ Z-3+13=0求(xy)^z的值
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
若x²-4x+y²+6y+√z-2+13=0求(xy)z的次方的值
已知3x-y+2z=x+2y+3z=0,求(3x^-xy+2y^)/(2x^+4xy+y^)值?
x-4x+y²+6y+(根号下z+1)+13=0 则(xy)²=?
已知1x-11+(y-2)²+√z+3=0,求xy+√z²的值