If the difference between the roots of the equation x^2+kx+1=0 is strictly less than 5 , where |k| 2, then k can be any element of the interval

NDA 2017 Mathematics question

If the difference between the roots of the equation is strictly less than , where , then k can be any element of the interval

Answer: (A)

\sqrt{(α+β)^2-4αβ}\sqrt{k^2-4}\sqrt$5

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-028575