Answers

2015-10-08T22:52:15+05:30
LHS
= n! (n+2)
= n! (n+1+1)
=n! [(n+1)+1]
=n! * (n+1) + n! * 1
= (n+1)! + n!
= n! + (n+1)!
=RHS

PROVED
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thanx frnd
wlcm!! Please mark as brainliest!