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4x^2+4y^2-16x-24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius?

A. center (2,3) radius=1/4
B. center (2,3) radius=1/2
C. center (-2,-3) radius=1/4
D. center (-2,-3) radius=1/2

1 answer

hint:
complete the square
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