Question

Calcule:
A) n!/(n-2)!
B) (n-1)/ (n+2)!
C) 3!/5!

Answer 1

Resposta:

Explicação passo a passo:

A) n!/(n-2)!

n(n-1)(n-2)!/(n-2)!

(n-1)(n-2)

n²-3n+2

B) (n-1)!/(n+2)!

(n-1)!/(n+2)(n+1)(n(n-1)!

1/(n+2)(n+1)

1/n²+3n+2

C) 3!/5!

3!/5.4.3!

1/5.4

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