Find the center and radius of the circle.x2 + y2 - 18x + 4y + 36 = 0
A. (9, -2); r = 7
B. (-9, 2); r = 49
C. (-2, 9); r = 7
D. (2, -9); r = 49
Answer: A
Mathematics
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A. {- 
, - 
}
B. {- 
, 
}
C. {
, 
}
D. ?
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A. Expression B. Equation
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A. {-1, 1, - 2} B. {- 2, 2} C. {1, - 2, 2} D. {4}
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