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The value of $\lambda$ with $|\lambda| < 16$ such that $2x^2-10xy+12y^2+5x+\lambda y -3=0$ represents a pair of straight lines, is :

\[\begin {array} {1 1} (1)\;-10 & \quad (2)\;-9 \\ (3)\;10 & \quad (4)\;9 \end {array}\]

1 Answer

(2) -9
answered Nov 7, 2013 by pady_1
 
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