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The equation x^(2) + y^(2) + 2gx + 2fy +...

The equation `x^(2) + y^(2) + 2gx + 2fy + c = 0` represents a point-circle when -

A

`g^(2) + f^(2) = -c`

B

`g^(2) - f^(2) = -c`

C

`g^(2) + f^(2) = c`

D

`f^(2) - g^(2) = c`

Text Solution

Verified by Experts

The correct Answer is:
C
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