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(x^2+6x) - (y^2-2y) + 1 = 0
(x+3)^2 - 9 + (y-1)^2 - 1 + 1 = 0
(x+3)^2 + (y-1)^2 = 9+1-1
(x+3)^2 + (y-1)^2 = 9
r^2 = 9
r = 3 (B)
keterangan : ^2 = pangkat 2