若X,Y均为实数,且满足X2+Y2+4X—6Y+13=0,求X,Y
若X,Y均为实数,且满足X2+Y2+4X—6Y+13=0,求X,Y
已知X,Y为实数,且满足(X+√(X2+2008))(Y+√(Y2+2008))=2008,求X2-3XY-4Y2-6X
已知x、y均为实数,且满足xy+x+y=17,x2y+xy2=66,求x2+y2
若实数x,y满足X2+y2-2X+4y=0,则x-2y的最大值为?
已知实数x,y满足x2+y2+4x-6y+13=0,求yx的值.
已知实数x,Y满足x2+y2+4x-6y+13=0,则x(-Y)=
已知:实数x、y满足x2+y2-4x-6y+13=0则y的x次方=
已知x,y为正实数,且满足关系式x2-2x+4y2=0,求x•y的最大值.
已知实数x,y满足关系式x2+y2-6x-4y+12=0
已知实数x,y满足x2+3y2+6x-12y+21=0,求x,y的值
已知实数x、y满足2x2-7xy+3y2=0,求x:y
已知实数x,y 满足x2+y2+2x-2√3y=0求: