Logo

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

13.06.2025 00:37

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

xx

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

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

iFixit says the Switch 2 is even harder to repair than the original - The Verge

Move the nub up to the top:

xxx x

n^2 - 1

What do all Indian parents have in common?

xxx

xxxx

n^2 - n + n - 1

F1 in Spain: Now that was a lapse in judgment - Ars Technica

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

(n - 1)(n + 1)

xxxx

US lawmakers fire back a response to Trump's NASA cuts - theregister.com

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

xxx

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

What are the most shocking facts about the Bollywood industry?

xxx x