1.

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

Answer»

`2fgh = BG^(2)+ CH^(2)`
`bg^(2) != ch^(2)`
ABC = 2fgh
None of these

Answer :A


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