If the product of the roots for the equation $x^{2} - 3 k x + 2 e^{2 l n (k)} - 1 = 0$ is 7, for k= ?

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Solution

The correct option is B 2
Answer = c

Product of roots $= 2 e^{2 l n (k)} - 1 = 7; 2 e^{2 l n (k)} = 8; e^{2 l n (k)} = 4; k = 2$

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