Logo

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

13.06.2025 00:08

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

xx

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

xxxx

Why do most Indian women cuckold or cheat on their husbands?

Move the nub up to the top:

n^2 - n + n - 1

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

Screen Time Nightmare: How ‘Digital Pacifiers’ Are Sucking The Sanity Out Of Children - Study Finds

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

n^2 - 1

xxx

Why do many modern Hollywood films rely heavily on CGI and visual effects instead of actual sets? What is your opinion on this trend?

xxx x

xxx

xxx x

Mark Hughes dissects how Verstappen's win bid imploded - The Race

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

(n - 1)(n + 1)

xxxx

5 ways Diabetes impacts the eyes - Times of India

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