Respostas

2014-05-09T13:17:02-03:00
(x – 3)² + y² = 11
(x - 3)² + (y - 0)² = 11 ==> centro (3 ; 0)

x² + y² + 2x – 6y – 12 = 0
(x + 1)² + (y - 3)² - 1 - 9 - 12 = 0 ==> centro (-1 ; 3)

D² = (3+1)² + (0-3)²
D² = 25 ==> D = 5 (resp)

4 5 4