1.

If the equation ax^(2) + 2hxy + by^(2) + 2gx + 2fy + c = 0 represents a pair of straight lines , then the square of the distance of their point of intersection from the origin is

Answer»

`(C (a + b) - af^(2) - bg^(2))/(AB - H^(2))`
`(c (a+ b) + f^(2) + g^(2))/( ab - h^(2))`
`( c (a + b) - f^(2) - g^(2))/(ab - h^(2))`
`(c (a + b) - f^(2) - g^(2))/((ab - h^(2))^(2))`

Answer :C


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