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If the sum of the slopes of the lines given by $3 x^{2} - 2 c x y - 5 y^{2} = 0$ is twice their product, then the value of $c$ is

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Correct option is B

m1+m2m1m2=2⇒2c3=2⇒c=3.

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If the sum of the slopes of the lines given by 3x2−2cxy−5y2=0 is twice their product, then the value of c is

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If the sum of the slopes of the lines given by $3 x^{2} - 2 c x y - 5 y^{2} = 0$ is twice their product, then the value of $c$ is