Question
If 
are roots of 
, then 
is equal to-
- 2/5
- 4
- -2/5
Hint:
We know that in equation given in the question, 
if are the roots, then,'
= 
= 
= 
The correct answer is: -2/5
Step by step solution:
= 
(we got the results as shown in the hints)
Hence, option(a) is the correct option.
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