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If the pair of lines ax^2 + 2hxy + by^2 ...

If the pair of lines `ax^2 + 2hxy + by^2 + 2gx + 2fy +c=0` intersect on the y-axis, then

A

`2fgh=bg^2 + ch^2`

B

`bg^2 = ch^2`

C

abc=2fgh

D

none of these

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The correct Answer is:
A
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