Equation of circle passing through (2,3) and centre on x-axis and r=5.

Equation of the circle passing through (2,0) and whose radical axis w.r. to the circle x^(2) +y^(2) = 1 is x = 1/2 is

Find the equation of the circle passing the through (-2,3) centre at (0,0).

Find the equation of the circle passing through (-2,3) (4,5) and whose centre lies on x-axis

A circle with centre (h,k) .If the circle passing through (0,0) and centre lies on x -axis.Then the equation of the circle is

The equation of the circle passing through (4,5) having centre at (2, 2) is

The equation of the circle passing through (2a,0) and whose radical axis w.r. to the circle x^(2) +y^(2) = a^(2) is x = a//2 is