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

Last Updated: 24.06.2025 02:28

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

xxx

n^2 - 1

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

Why, after a divorce, would one still want to ruin the other one’s life?

xxx x

xxxx

(n - 1)(n + 1)

What percent of "being a good programmer" is due to expertise in the syntax of a language(s)? Could you have mastered syntax and still be a bad programmer; or, conversely, be a great programmer with only a fundamental handle on syntax?

n^2 - n + n - 1

Move the nub up to the top:

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

Where should Jac Caglianone hit in the Royals order? - Royals Review

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

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

xxx x

What are the best products for oily skin in Pakistan?

xxx

xxxx

xx

Mariska Hargitay Was Accidentally Left Behind at the Scene of the Car Wreck That Killed Her Mom Jayne Mansfield - People.com

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