Answer :

The coefficient of x in the expansion of (x+3)2 can be calculated as follows:

(x + 3)3 = x3 + (3)3 + 3 (x) (3) (x + 3)


= x3 + 27 + 9x (x + 3)


= x3 + 27 + 9x2 + 27x


Coefficient of x is 27


Hence, option D is correct

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