CMAT 2014 Solved Question Paper

Question : 19 of 100

Marks: +1, -0

If the product of roots of the equation K

x^2

+ 6x + (2K - 1) = 0 is - 1, then K is

Solution:

(b ) We know that, product of roots =

c/a

From equation,

c/a

{2K-1}/K

= - 1
⇒ 2 K - 1 = - K
⇒ 3K = 1
∴K =

1/3

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