prove that:- n!(n+2)=n!+(n+1)!

Asked by  | 24th Feb, 2012, 08:26: PM

Expert Answer:

RHS = n!+(n+1)! = n! + (n+1)n! = n!(1+n+1) = n!(n+2) = LHS

Answered by  | 27th Feb, 2012, 09:35: AM

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