Divisibility Rules (6, 7, 8, 9, & 10)

Using binomial theorem, prove that `3^(2n+2)-8^n-9` is divisible by `64` , where `n in Ndot`

Prove that (3n+1)7^n - 1 is divisible by 9 (Mathematical Induction)

Prove that n^2 - 1 is divisible by 8 where n is a positive odd integer| Stat & Math Tutorials.

#17 proof prove induction 8^n-1 is divisible by 7 divides mathgotserved induccion

Prove that 8^n -1 is divisible by 7 for all positive integers n