Logo

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

11.06.2025 15:05

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

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

xx

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

This seed is rich in protein, magnesium, and helps grow muscle mass - Earth.com

n^2 - n + n - 1

xxx x

xxxx

How did Farrah Fawcett die?

xxx

xxx

xxx x

Why do liberals refuse to define what a woman is and what does that mean for the future of feminism?

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

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

xxxx

Magic Johnson Bluntly Blames Two Players for Knicks' Season-Ending Loss - Sports Illustrated

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

Move the nub up to the top:

n^2 - 1

Samsung is giving these Galaxy phones a big One UI upgrade - here's which models qualify - ZDNET

(n - 1)(n + 1)