The value of lambda for which the equat...

The value of `lambda` for which the equation `x^2-y^2 - x - lambda y - 2 = 0` represent a
pair of straight line, are

A

`p=c sqrt(1+ m^(2))`

B

`c=p sqrt(1+ m^(2))`

C

`cp= sqrt(1+m^(2))`

D

`p^(2) + c ^(2) +m^(2) =1`

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The correct Answer is:

B

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