Equation of circle with centre (-a,-b) a...

Equation of circle with centre (-a,-b) and radius `sqrt(a^(2)-b^(2))` is

A

`x ^(2) + y ^(2) + 2ax + 2 by + 2b ^(2) =0`

B

`x ^(2) + y ^(2)-2ax -2by -2v ^(2) =0`

C

`x ^(2) + y^(2) - 2ax -2by + 2b ^(2) =0`

D

`x ^(2) + y^(2) -2ax + 2by + 2a ^(2) =0`

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The correct Answer is:

A

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