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sum(r=1)^(oo) (3r^(2) +r +5))/(r!) =...

`sum_(r=1)^(oo) (3r^(2) +r +5))/(r!) = `

A

12 e

B

12e - 3

C

12e - 4

D

12e - 5

Text Solution

Verified by Experts

The correct Answer is:
D
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