Show by calculation that the point P(−9,−3) lies inside the circle x2+y2+4x−8y−80=0.
Find the equations of the two circles which pass through P, touch the given circle, and have radii of 5 units.
Show by calculation that the point P(−9,−3) lies inside the circle x2+y2+4x−8y−80=0.
Find the equations of the two circles which pass through P, touch the given circle, and have radii of 5 units.