If (a, b) is the centre and c is the radius of the circle x^2+y^2+2x+6y+1=0, then what is the value of a^2+b^2+c^2?

NDA 2024 Mathematics question

If is the centre and is the radius of the circle , then what is the value of ?

Answer: (A)

Completing squares: . So the centre is $(a,

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Question ID VK-029822