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

Last Updated: 02.07.2025 08:01

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

xxx x

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:

Dune: Awakening Sales Reach 1m as Dev Shares Fun Stats - TechRaptor

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

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

n^2 - n + n - 1

As it happened: Breakaway holds on for victory ahead of GC contenders on the final stage of the Critérium du Dauphiné - Cyclingnews

n^2 - 1

(n - 1)(n + 1)

xxx

A Korean Stuido made Stellar Blade and Japanese stuido is remastering Lollipop Chainsaw. So why are western developers so aginst to cenvtunal female beauty?

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

xx

xxx x

How quickly can you gain muscle by only consuming milk and chicken breasts, without using any supplements such as creatine or whey isolate?

xxx

xxxx

xxxx

'Heads of State' Review: John Cena & Idris Elba in Amazon Buddy Comedy - The Hollywood Reporter

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