A) \[\frac{{{3}^{n+2}}+2n-5}{(n+1)(n+2)}\]
B) \[\frac{{{3}^{n+2}}-2n+5}{(n+1)(n+2)}\]
C) \[\frac{{{3}^{n+2}}-2n-5}{(n+1)(n+2)}\]
D) None of these
Correct Answer: C
Solution :
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