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IF `x_1` and `x_2` are the real roots of the equation ` x^2 - kx +c=0` then the distance between the points A `(x_1 ,0)` and `(x_2 ,0)` is

A

`sqrt(k^2 -c)`

B

`sqrt(c-k ^2)`

C

`sqrt(k^2-4c )`

D

`sqrt(k^3+4c )`

Text Solution

Verified by Experts

The correct Answer is:
C
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