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1.
The coefficient of 
in the expansion of 
is
in the expansion of 2.
If 
and 
then 
equals
and then equals
3.
If 
, then value of 
is
, then value of is
4.
If 
is the coefficient of 
in 
, then 
is equal to
is the coefficient of in , then is equal to
5.
The sum of 
will be