Find the center (h, k) and radius r of the circle with the given equation. x2 - 4x + 4 + y2 + 12y + 36 = 4
A. (h, k) = (2, -6); r = 2
B. (h, k) = (-6, 2); r = 2
C. (h, k) = (6, -2); r = 4
D. (h, k) = (-2, 6); r = 4
Answer: A
Mathematics
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