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

Last Updated: 18.06.2025 23:56

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

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

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

(n - 1)(n + 1)

Why do you think Filipinos are conservatives?

xxx

n^2 - n + n - 1

xxx x

What was your biggest culture shock going to Europe?

n^2 - 1

xxx

xxxx

Why are Democrats at Q so desperate that they keep taking down my links to comments that prove the residents in Ohio have been filing complaints about the Haitians eating the local wildlife from ponds in the local parks? Election interference

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

xxxx

xx

Why do we still feel attached or jealous when a covert narcissist moves on, even after realizing their toxicity and the suffering they caused?

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

xxx x

Move the nub up to the top:

Insulin Isn't Just Made by The Pancreas. Here's Another Location Few Know About. - ScienceAlert

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