|x-2y|+√3x-4y =0求x y值
|x-2y|+√3x-4y =0求x y值
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知4x-2y=0,求x-y/3x+2y的值
已知x^2+y^2-4x-2y+5=0,求【2/3x√9x+y^2 √[x/y^2]】的值
已知|3x-y|+|x+y|=0,求x-y除以x*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3x^2+xy-2y^2=0,求{(x+y)/(x-y)+4xy/(y^2-x^2)}/{(x+3y)*(x-y)}
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
已知x^2-4x+y^2-10y+29=0,求x^2y^2+2x^3y^2+x^4y^2的值
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x^2+3xy-4y^2=0(y≠0),求x-y/x+y的值.
已知x^2-2√3x+y^2+2y+4=0 求y/x的值