If the difference between the roots of the equation ${x^2} + ax + 1 = 0$ is less than $\sqrt 5 ,$ then the set of possible values of $a$ is

Question

$\left( {3,\infty } \right)$

$\left( { - \infty , - 3} \right)$

$\left( { - 3,3} \right)$

$\left( { - 3,\infty } \right)$

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