方程X+Y=XY,求除了X=0,Y=0 X=2,Y=2的解
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
求方程xy-2x-2y+7=0(x≤y)的整数解
已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
求x^2+2xy+y^2+2x-2y=0的参数方程
2x+8y-xy=0(x>0,y>0),求x+y的最小值
x-y-x平方+2xy-y平方+2=0,求x-y的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
已知y-x-2xy=0,求3x+xy-3y/y-xy-x的值
已知y-x-2xy=0,求(3x+xy-3y)\(y-xy-x)的值
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x-3y=0,求(2x+y)(x-y)/x^2-2xy+y^2的值