- #1
Joseph1739
- 33
- 0
Homework Statement
I'm trying to understand a proof for Mersenne number theorem, but I'm having trouble understanding the expansion from 2ab-1 into (2a-1)((2a)b-1+(2a)b-2+...+2a+1)).
Homework Equations
Not sure
The Attempt at a Solution
I don't know where to start really and I can't seem to find any proof that explains what is going on in this step.