Resposta:
(n+1)n(n-1)!+(n+1)(n-1)!/(n+1)(n-1)!
(n+1)(n-1)![n+1]/(n+1)(n-1)!
n+1
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Resposta:
(n+1)n(n-1)!+(n+1)(n-1)!/(n+1)(n-1)!
(n+1)(n-1)![n+1]/(n+1)(n-1)!
n+1