Question

Calcule o valor ou simplifique:
A)9!=
B)12!
---=
7!
C)8!10!
--------
9!7!
D)(n+2)!/(n-2)!=
E)(n+3)/n!=
F)(n-1)!/(n-3)!=
G)(n+2)!.(n-4)!
---------------------=
(n+1)!.(n-1)!
H)28!+29!/30!

Answer 1

D)(n+2)!/(n-2)!=
E)(n+3)/n!=
F)(n-1)!/(n-3)!=
G)(n+2)!.(n-4)!

Answer 2

mano que assunto é esse?