A circle can be defined by an equation x² + y² + ax +by+c= 1. Find an equation of a circle that passes through (-5, 0), (0, 0) and (0, -7). Ox² + y² +7x + 5y − 1 = 0 Ox² + y² + 2x + 3y + 2 = 0 Ox² + y² + 5x + 7y + 1 = 1 Ox² + y² + 3x + 2y + 1 = 1

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