若x^2-2xy+2y^2-4y=0,求3x+2y的值

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*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值? 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值 若x,y 为正整数.x^2+y^2+4y-96=0,求xy 若x²-4xy+5y²-2y+1=0,求x,y 若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值 若2x+y=0,求(x^2+xy+y^2)/(2xy-x^2) 若集合{x,xy,lg(xy)}={0,|x|,y},求log8(x^2+y^2) 若x^2+xy+y=14,y^2+xy+x=28,求x+y 若x+y=4,x-y=6,求xy(y^2+y)-y^2(xy+2x)-3xy的值. 若（x+1)^2+|y-2|=0,求3x^2-[5xy-(x^2y-3xy)+4x^2y-8xy]的值 若X+Y=0,XY=11,求X^2-XY+Y^2的值. 若x,y满足x^+2y^-2xy+1=0,求xy的值 当x-y=2xy时,求4x-3xy-4y/xy 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3x^2+xy-2y^2=0,求（x+y/x-y+4xy/y^2-x^2)除以(x^2+2xy-3y^2/x^2-9y^2)的值 若正整数X,Y满足2X+Y--XY=0,求X+Y的最小值