Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If 
and 
where 
, then 
has at least
Text Solution
Verified by ExpertsThe correct answer is:
B
Let all four roots are imaginary. Then roots of both equations 
and 
are imaginary.
Thus 
, So 
, which is impossible unless 
.
So, if 
or 
at least two roots must be real.
If 
, we have the equations.
and 
or 
as one of 
and 
must be positive, so two roots must be real.
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