Show that the equations ` x^2+y^2-6x+4y-36=0` represents a circle,Also find its centre and radius.

Solve the following:prove that the equation 3x^2+3y^2-6x+4y-1=0 represents a circle.Find its centre and radius.

Show that the equation: 3x^2+3y^2+12x+18y-11=0 represents a circle.

The equation x^(2)+y^(2)+4x+6y+13=0 represents

Show that abs(frac{z-2}{z-3}) =2, represents a circle find its centre and radius

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

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

The equation (x-5)^(2)+(x-5)(y-6)-2(y-6)^(2)=0 represents