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

Last Updated: 19.06.2025 01:27

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

(n - 1)(n + 1)

xxx

xx

Why do flat-Earthers think the Earth is flat?

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:

Why are leftist movements so popular among young people?

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

xxx

n^2 - 1

Why is Trump not on a violation of probation, offering a job for an endorsement is in violation of federal law? Kaamala knew better she is very sharp.

n^2 - n + n - 1

xxx x

xxxx

If I only have a fire extinguisher to defend myself against some threat from people, should I spray them for max damage or just hit them with the fire extinguishers?

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

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

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

What specific economic and social impacts would result if all climate change policies and regulations were immediately repealed worldwide?

xxxx