The coordinates of the centre and radius of the circle represented by the equation(3−2λ)x2+λy2−4x+2y−4=0 are

The equation (3−2λ)x2+λy2−4x+2y−4=0 will represent a circle if 3−2λ=λ⇒λ=1                          ∵ Coeff. of x2= Coeff. of y2Putting λ=1 in the given equation, we getThe coordinates of centre and radius of the circle represented by this equation are (2, -1) and 3 respectively.