NDA 2017 — Mathematics PYQ
NDA | Mathematics | 2017If the difference between the roots of the equation x2 + kx + 1 = 0 is strictly less than √5 , where |k| ≥ 2, then k can be any element of the interval

If the difference between the roots of the equation x2 + kx + 1 = 0 is strictly less than √5 , where |k| ≥ 2, then k can be any element of the interval