求y‘+2y/x=3x^2*y^4/3的通解

已知x-y=1,求[(x+2y)^2+(2x+y)(x-4y)-3(x+y)(x-y)]除以y的值大神们帮帮忙 已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 已知(x+2y)(2x-3y)=y(y-4x),试求x/y的值 y=3(x-y),x=2(x-y)求x,y的值 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 已知（x+y）2 =2,(x-y)3 =3,求(x+y)7(x-y)2(x+y)3(y-x)4 的值 已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y/2x-y的值 已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y/2x-y的值 已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) x^2+4y^2-6x+4y+10=0,求x^4-y^4/(x+2y)(x-2y)*x+2y/xy^2+y^3除以（x^2+y^2/y)^2的值 求5x-2y=x-y=4x-3y-2的解 求函数f(x,y)=x^3-3x-4y+y^2的极值, 已知3x-4y/2x+y=1/2 求x/y的值 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/y=3/4,求2x-y/x+y的值.