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circle ax^2+ay^2+2gx+2fy+c=0 touches X-a...

circle `ax^2+ay^2+2gx+2fy+c=0` touches `X`-axis, if

A

`f^(2) gt ac`

B

`g^(2) gt ac`

C

`f^(2) = bc`

D

`g^(2) = ac`

Text Solution

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The correct Answer is:
D
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