The graph of one of the equations below is not a circle. Which one?
(a) x2 + (y + 5)2 = π
(b) 7x2 + 4y2 − 14x + 3y2 − 2 = 0
(c) 3x2 + 6x + 3 = 3y2 + 15
(d) 2(x − 1)2 − 8 = −2(y + 3)2
(e)
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