Question

(n-4)!+(4-n)!+2n!/2

Answer 1

\[\frac{ (n-4)!+(4-n)!+2n! }{ 2 }\]

Answer 2

hint:
if n-4>0 then n>4, so (4-n)! is not defined, being 4-n<0
and vice versa if 4-n>0

Answer 3

going on that n can only have one value ( assuming we are only dealing with whole numbers)

Answer 4

if n cannot be <4 nor >4 then n = ?

Answer 5

n=4 then thank you for your help!!

Answer 6

yw