Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 2x + 4y - 10 = 0
A. (x + 1)2 + (y - 2)2 = 15
center (-1, 2), r = 
B. (x - 1)2 + (y + 2)2 = 15
center (1, -2), r = 
C. (x - 1)2 + (y + 2)2 = 15
center (-1, 2), r = 
D. (x - 1)2 + (y + 2)2 = 15
center (1, -2), r = 15
Answer: B
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