Complex Numbers And Quadratic Equations question 556

Question: If the product of roots of the equation, $ mx^{2}+6x+(2m-1)=0 $ is -1, then the value of m will be [Pb. CET 1990]

Options:

A) 1

B) - 1

C) $ \frac{1}{3} $

D) $ -\frac{1}{3} $

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Answer:

Correct Answer: C

Solution:

According to condition $ \frac{2m-1}{m}=-1\Rightarrow 3m=1\Rightarrow m=\frac{1}{3} $