已知√x-2+|2x-y-3|=0 试求2x^2y+xy^2的平方根RT,

已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)X(x-y) 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知(x+2y)(2x-3y)=y(y-4x),试求x/y的值 已知√x方-y +√2x+y=0,求x+y的值 已知实数x,y满足x+y+2x-2√3y=0,求：㈠x+y的最大值；㈡x+y的最小值? 已知√x-2+|2x-y-3|=0 试求2x^2y+xy^2的平方根 已知x+y=0,求x^3+x^2*y+xy^2+y^3 已知4x-2y=0,求x-y/3x+2y的值 已知(x+y)^(2)+(x+3y-4)^(2)=0,求x,y的平方和 已知x=2y,求2x-y分之x-3y的值.0 已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y 已知|2x-3y|+|3x-y-1|=0,求x,y的值. 已知2x²-xy-3y²=0,求x-y/x+y 已知|x+y|+(x-y+3)^2=0,求x,y的值 已知x,y>0 2x+y+3=xy 求5x+4y最小值 已知x-3y=0,求（2x+y)/(x^2-2xy+y^2)*(x-y)的值已知x-3y=0,求（2x+y)/(x^2-2xy+y^2)*(x-y)的值 已知7x+5y/2y-x=3/2,且x≠0,求X/x-4y 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值