### Example of Proof by Induction 2: 3 divides 5^n - 2^n

Precalculus: We consider a proof by induction with divisibility. Show for all n gt 1 that 3 divides 5^n-2^n. The bookkeeping i simplified by using the definition of divisible. We also show where this class of equations come from.

Length:
09:15