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If ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 repre...

If `ax^(2)+2hxy+by^(2)+2gx+2fy+c=0` represents parallel lines then

A

hf=bg

B

`h^(2)=bc`

C

`a^(2)f=b^(2)g`

D

none of these

Text Solution

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The correct Answer is:
A
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