If (2,-1) lies on x^(2) + y^(2) + 2gx ...

If (2,-1) lies on ` x^(2) + y^(2) + 2gx + 2fy + c = 0 ` , which is concentric with ` x^(2) + y^(2) + 4x - 6y + 3 = 0 ` , then c =

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MARVEL PUBLICATION-CIRCLE AND CONICS -MULTIPLE CHOICE QUESTIONS

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