- #1
mcooper
- 29
- 0
Homework Statement
Show 7 divides 3^(2n+1) + 2^(n+2)
The Attempt at a Solution
Have proved base case K=1 and for the case k+1 I have got ot the point of trying to show 7 divides 9.3^(2k+1) + 2.2^(k+2).
Any pointers would be much appreciated. Thanks in advance