Logo

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

14.06.2025 01:19

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

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

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

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

Do snipers lay on top of tank turrets during combat?

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

xxx

xxxx

In the New Testament, Christ quotes the Ethiopian book of Enoch. How do the Sola Scriptura folks square this circle?

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

xxx x

n^2 - n + n - 1

Why do I feel like I want to suck a big dick after injecting meth?

xx

(n - 1)(n + 1)

xxx x

Why is social media so anti-fee speech, and have they become total BS?

Move the nub up to the top:

xxx

n^2 - 1

How do you like to be pegged?

xxxx