Prove that 6 has no common factor with n then n^2 - 1 is divisible by 6

[|2x-1| - |x+5| = 3] && [Show that 7^n -1 is divisible by 6] | Forum

I'm almost certain that the error has to do with the second term [- -(x+5)], but I fail to see where I'm messing up. Show that 7^n -1 is divisible by 6. As the 7[sup:1omnahzt]n-1[/sup:1omnahzt] grows by a factor of 7 as well.

Prove that n(n+1)(n+2) is divisible by 6. Principle of... - YouTube

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Prove n(n+1)(n+2) is divisible by 6

Show that n(2n + 1)(7n + 1) is divisible by 6 for all • Math Forum

For any positive integer n, prove that n³ – n is divisible by 6

NCERT Exemplar Class 10 Maths Exercise 1.4 Problem 4. Prove that one and only one out of n, n + 2 and n + 4 is divisible by 3, where n is any positive int . . . .

If n and k are positive integers, is n divisible by 6? : Data Sufficiency...

elementary number theory - Prove that $6$ divides...

Number of substrings divisible by 6 in a string of... - GeeksforGeeks

1.Show that n(n+1)(n+2) is divisible by 6. 2.Show that... | Socratic