Question

Simplifique:
(2n)!/2(2n-2)!

Answer 1

então vamos lá :.

$\frac{(2n)!}{2(2n-1)!}$

$\frac{2n(2n-1)}(2n-2)!}2.(2n-2)$

$\frac{2n(2n-1)}{2}$

$n(2n-1)$

$2n^{2}-n$

boa noite!!

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boa noite!!

Answer 2

Desenvolvendo temos!

$\frac{(2n)!}{2(2n-1)!}$

$\frac{2n(2n-1)(2n-2)!}{2.(2n-2)!}$

$\frac{2n(2n-1)}{2}$

$n(2n-1)$

$2n^{2}-n$

Espero ter ajudado!