Question

Simplifique (n+3)! / (n+1)!

Answer 1

$\dfrac{(n+3)!}{(n+1)!}\\\\\\ =\dfrac{(n+3)\cdot (n+2)\cdot (n+1)!}{(n+1)!}\\\\\\ =\boxed{\begin{array}{c} (n+3)\cdot (n+2) \end{array}}$


Bons estudos! :-)