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Question 2:
Write the coefficients of 
in each of the following:
(i) 
(ii) 
(iii) 
(iv) 
(i)
In the above expression, the coefficient of is 1.
(ii)
In the above expression, the coefficient of is −1.
(iii)
In the above expression, the coefficient of is
.
(iv) 
In the above expression, the coefficient of is 0.
