What is (8-5!).Premutation

I need help with this problem.Homework

Thank u in advance

This is not clear.
if you write it as (8-5)! then it is 3!, which is 3*2*1 is 6.

or we can think as in your one 8 - 5! this is equal to 8 - 5*4*3*2*1 = 8 - 120 = -112
Pl check you HW,
here * mean multuplication

! means that number times all the other nubmers smaller than it

so 5! = 5*4*3*2*1 which is 120

now u do 8-120 which is 112

it's a factorial problem