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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 prove that `2fgh=bg^(2)+ch^(2)`.

A

`f^2=bc`

B

abc=2fgh

C

`bg^2 ne ch^2`

D

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

Text Solution

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The correct Answer is:
A, D
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