Respuesta :

Hint: (x + 10)^2 + (y + 15)^2 = 121 (x - (-10))^2 + (y - (-15))^2 = 121 (x - (-10))^2 + (y - (-15))^2 = 11^2 Compare the last equation to (x-h)^2+(y-k)^2=r^2