若|X+Y-4|+(XY-1)^2=0,则X^2+Y^2=__________

若（x+1)^2+|y-2|=0,求3x^2-[5xy-(x^2y-3xy)+4x^2y-8xy]的值 若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)= 若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值 若x²-4xy+5y²-2y+1=0,求x,y 若x,y满足x^+2y^-2xy+1=0,求xy的值 已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值!已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值急! 若|x-2|+x²+1/4y²-xy=0 x= y= 1若x+2y=0 ,xy不等于0,求分式 x^2+2xy / xy+y^2 已知xy>0,证明xy+xy/1+x/y+y/x>=4 xy>0,证xy+1/xy+x/y+y/x>=4 1-2/x+y=xy,4y+6x=xy.求xy的解? 若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思，是3x-2xy-3y/x-2xy-y 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 若(2x-14xy-2y)除以(x-2xy-y)=4,则1/x-1/y= 已知x^2+y^2+x^2y^2-4xy+1=0 求(x-y)^2008-(xy)^2008 若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y 若1/x-1/y=3,求5x+2xy-5y/x-4xy-y的值 若(1/x )-(1/y)=3,求(3x+4xy-3y)/(x-2xy-y)的值.