Find the center and radius of the circle 4x2 + 4 y2 + 16x - 24 y + 51 = 0.
A) (-2, 3) ; 1/4
B) (-2, 3) ; 1/2
C) (-4, -3) ; 1/2
D) (-2, -3) ; 1/4
Correct Answer:
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