Logo

Why is (n-1)(n+1)=n^2-1?

Last Updated: 18.06.2025 01:23

Why is (n-1)(n+1)=n^2-1?

n^2 - 1

n^2 - n + n - 1

Move the nub up to the top:

Why do people procrastinate and how can they stop?

xxx x

xxxx

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

Has your wife or girlfriend ever been felt up in public by a stranger?

xx

xxx x

xxxx

Can being annoyed be a sign of getting angry?

(n - 1)(n + 1)

xxx

The basic answer is that you cross-multiply the values in each factor:

Trump must stop the AI bloodbath before it’s too late - The Hill

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

xxx

So, that’s a rectangle with sides 2 and 4.

Do all you people that took the "jab" feel lied to yet?

And you are left with almost a square. One less than the square of side n.