Question

. Prove that n ! (n + 2) = n! + (n + 1)!.​

Answer 1

Step-by-step explanation:

RHS =

n! + (n+1)!

we can say. that,

(n+1)! = (n+1)! * n!

so,

n! + (n+1)! * n!

(substituting (n+1)!z value)

so,

taking n! common

n! * (n+1 +1)

n! * (n +2)

so,

RHS = LHS