Question

(n !).(n + 2) = n! + (n+1)!​

Answer 1

I HOPE IT WILL HELP U ✌️

PLZ MARK AS BRAINLEST

Answer 2

I can't understand what are you talking about but I know something like this. It might be a formula of permutation and combination or something related to that.

If you want to simplify it, I don't know how to.

Sorry

If I am correct regarding the first paragraph mark me brainliest.