Question

1- simplifique
a) 4! +6! /
6!

b) 5! - 3! /
3!

c) 3! 8! /
2! 6!
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Answer 1

Resposta:

$a) \frac{4!+6.5.4!}{6.5.4!}=\frac{4!(1+30}{4!(30)}=\frac{31}{30}$

b) $\frac{5!-3!}{3!}=\frac{5.4.3!-3!}{3!}=\frac{3!(5.4-1)}{3!}=5.4-1=19$

c) $\frac{3.2!8.7.6!}{2!6!} =3.8.7=168$