Question

2. Simplificar e efetuar
a) 4! + 5!
4!
b) 6!/8!=

Answer 1

Explicação passo-a-passo:

$a) 4!+5!\\=4.3.2.1+5.4.3.2.1\\=24+120\\=144$

$b)\frac{6!}{8!} \\=\frac{6!}{8.7.6!}$

Simplificando $6!$ temos:

$=\frac{1}{8.7} \\\\\frac{1}{56}$