x^2-2xy+y^2+6y+10=0求x,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?
x^2-2xy+y^2+6y+10=0求x,y的值.
已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
x的平方-2xy+y的平方-6y+10=0,求x,y
已知x>0,y>0,且x+6y=5根号xy,求(2x+根号xy-y)分之(x+根号xy+2y)的值
如果x^2+xy+y-14,y^@+xy+x=28,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xy/x+y=6,求3x-2xy+3y/-x+3xy-y的值.
x-y-x平方+2xy-y平方+2=0,求x-y的值
已知xy=2,x-y=3,求(x+y)(x-y)-y^2-(6x^2y-2xy^2)/2y的值.