Logo

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

11.06.2025 03:57

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

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

(n - 1)(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

France blown away! Records sent tumbling as Les Bleus concede five goals for the first time in 56 YEARS against incredible Spain - Goal.com

Move the nub up to the top:

xxx

n^2 - n + n - 1

Geologists Reveal World’s Biggest Iron Deposit Worth $6 Trillion Set to Impact Global Economy - The Daily Galaxy

xxxx

xxxx

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

Which fish tastes good for South Indian curries?

xxx x

n^2 - 1

xxx

What is the most sentimental item you inherited from someone dear to you and what does it mean to you?

xxx x

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

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

Is The Last of Us Part 2 really as woke as people say it is?

xx