已知实数xy满足x^2+4y^2+2x-4y+2=0,求x^2y+2x的值
已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值
已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值
已知实数x、y满足x^2+4xy+4y^2+x+2y-6=0,求6/(x+2y)的值
已知X,Y为实数,且满足2X^2+4XY+4Y^2+8X+12Y+10=0,求x+y的值.
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知非零实数x,y满足x²-4xy+4y²=0,求分式2x-y除以2x+y的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
已知实数X.y满足X^2+xy-y^2=0,求x/y的值
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知实数XY满足x^2+y^2+2x+4y-20=0求 y/x
已知实数xy满足方程x^2+y^2-4x+1=0求y比x的最小值