Visual Factorization of n³ - 1'in kopyası
- Author:
- nurefsan, Roy Wright
If we start with dots arranged in an cube, but remove one dot, the rest can be rearranged into identical layers. One consequence of this is that a prime number can (almost) never come right before a cube.
Not only that, but it's not hard to see that each of these identical layers has dots in it, which shows why can be factored into .