The `(x-x_1)(x-x_2)+(y-y_1)(y-y_2=0` represents a circle whose centre is

The -equation (x-x_1)(x-x_2)+(y-y_1)(y-y_2)=0 Represents a circle whose centre is

The equation (x-x_1)(x-x_2)+(y-y_1)(y-y_2=0 Represents a circle whose centre is

The equation (x-x_(1))(x-x_(2))+(y-y_(1))(y-y_(2))=0 represents a circle whose centre is

Show that the equation x^(2)+y^(2)+x-y=0 represents a circle find its centre and radius.

Show that the equation 3x^(2)+3y^(2)+6x-4y-1=0 represents a circle Find its centre and radius.

The equation x^2+y^2+x+y+1=0 represents whose centre is:

The four point of intersection of the lines ( 2x -y +1) ( x- 2y +3) = 0 with the axes lie on a circle whose center centre is at the point :