The values of a for which both roots of quadratic equation lie in the interval (-2,2), are
Required conditions are
i) D ≥ 0 (as roots may be equal)
ii)
iii)
Now,
If both the roots lie in the interval (-2,2) then,
i)
ii)
iii)
iv)
From (i), (ii), (iii) and (iv), intersection is
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