已知x,y满足|x-y-4|+(x+y)^2=0,求(1/2x^2y)^3的值

已知x,y满足y 已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知x,y满足约束条件x-4y 已知实数x,y满足：y 已知实数x,y满足约束条件x+y>3,y 已知x,y满足{x>=1,x+y 已知x,y满足{x>=1,x+y 已知实数x、y满足-4 已知实数x,y满足-4 已知实数x,y满足方程x*x+y*y-4x+1=0.求y-x的最大值 已知变量x,y满足条件{x 已知x,y满足4x²+y²-4x-6y+10=0 已知实数x、y满足x²+y²+4x-6y+13=0 已知X和Y满足3X+4Y=2,X-Y-1/7 已知x和y满足3x+4y=2,x-y 已知非零有理数x,y满足x²-4xy+4y²=0,求x-y/x+y-y-x/x+y的值. 已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y