Complete the square in x and y to find a Cartesian equation of the form  +  = 1 for the given equation. Identify the center. 2x2 + 5y2 - 28x + 40y + 168 = 0

A.  +  = 1; Center: (7, -4)
B.  +  = 1; Center: (-7, 4)
C.  +  = 1; Center: (7, -4)
D.  +  = 1; Center: (-7, 4)


Answer: C

Mathematics

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