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The circles x^(2)+y^(2)-2x-4y+1=0 and x^...

The circles `x^(2)+y^(2)-2x-4y+1=0` and `x^(2)+y^(2)+4y-1 =0`

A

`(1)/(a^(2))=(1)/(b^(2))+(1)/(c^(2))`

B

`(1)/(b^(2))=(1)/(c^(2))+(1)/(a^(2))`

C

`(1)/(c^(2))=(1)/(a^(2))+(1)/(b^(2))`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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