5x^2-4xy+y^2-2x+1=0求（x-y)^2010的值

若（x+1)^2+|y-2|=0,求3x^2-[5xy-(x^2y-3xy)+4x^2y-8xy]的值 5x的平方+4X-2xy+y+1=0,求x和y 5x²-4xy+y²-2x+1=0,求(x-y)2010 1-2/x+y=xy,4y+6x=xy.求xy的解? 若x²-4xy+5y²-2y+1=0,求x,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 已知（x+2)^2+|y+1|=0,求5xy^2-{2x^2y-[3xy^2-(4xy^2-2x^2y)]} 已知x,y>0 2x+y+3=xy 求5x+4y最小值 1.已知x+y=-4,xy=3,求5（2分之1xy+2y）+[6x-(2xy+y-3x)]的值2.已知（x+3）^2+|x-y+10|=0求代数式5x^2y-[2x^2y-(3xy-xy^2)-3x^2]-2xy^2-y^2的值 已知（x+2）*+|y+1|=0求5xy*-｛2x*y-【3xy*-（4xy*-2x*y）】｝的值 已知（x+2）*+|y+1|=0求5xy*-｛2x*y-【3xy*-（4xy*-2x*y）】｝的值帮忙啊!谢谢! 已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)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! 求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=? 求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=? 已知x^2+y^2+x^2y^2-4xy+1=0 求(x-y)^2008-(xy)^2008 已知（x+2）^2+|x+y+5|=0,求3x^2y-[2x^2y-(2xy-x^2y)-4x^2]-xy 若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y