The equation `x-y=4 and x^2+4xy+y^2=0` represent the sides of

The equations x-y=4 and x^2+4xy+y^2=0 represent the sides of

The equation (x+y=6)(xy-3x-y+3=0) represents the sides of a triangle then the equation of the circumcircle of the triangle is

The equation 4x^(2) + 4xy + y^(2) = 0 represents two……

The equation x^(2) + y^(2) - 2xy -1 =0 represents :

The equation x^(2) + y^(2) - 2xy -1 =0 represents :

The equation 4x^(2)-12xy+9y^(2)=0 represents

The equation x^(2)+4xy+4y^(2)-3x-6y-4=0 represents a

The equation x^(2)+4xy+4y^(2)-3x-6y-4=0 represents a

The equation 11x^(2)-2xy+4y^(2)=0 represents