Convert the equation to the standard form for a hyperbola by completing the square.x2 - y2 - 2x + 4y - 4 = 0
A. (x - 1) 2 + (y - 2) 2 = 1
B. (x - 1) 2 - (y - 2) 2 = 1
C. (y - 1) 2 - (x - 2) 2 = 1
D. 
- 
= 1
Answer: B
Mathematics
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