Respuesta :
one way is the complete the square to convert this formula to the standard for form where RHS = radius^2
x^2 - 10x + y^2 + 6y = -18
(x-5)^2 - 25 + (y+3)^2 - 9 = -18
(x-5)^2 + (Y+3)^2 = -18 + 25 + 9 = 16
SO r^2 = 16
THE RADIUS = r = 4 UNITS
x^2 - 10x + y^2 + 6y = -18
(x-5)^2 - 25 + (y+3)^2 - 9 = -18
(x-5)^2 + (Y+3)^2 = -18 + 25 + 9 = 16
SO r^2 = 16
THE RADIUS = r = 4 UNITS
