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1. $2^{2} . 3^{2 n + 2} - 9^{n + 1}$

A. $2 . 3^{2 n + 1}$
B. $2 . 3^{2 n + 1}$
C. $2 . 3^{2 n + 1}$
D. $2 . 3^{2 n + 1}$

Answer: Option D

Explanation:

দেওয়া আছে,

2^{2} \times 3^{2 n + 1} - 9^{n + 1}

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