Logo

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

11.06.2025 02:28

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

xx

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

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

Why won't my mom let me come home if I'm homeless?

xxx

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:

How did you become popular in school?

n^2 - 1

(n - 1)(n + 1)

xxxx

Does the Lil Wayne song ‘Lollipop’ refers to a Lollipop sweet or a metaphor?

n^2 - n + n - 1

xxxx

xxx x

2 Jewish delis make the New York Times’ 2025 ‘Best Restaurants in New York City’ list - Jewish Telegraphic Agency

Move the nub up to the top:

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

xxx x

Can a twin flame runner be happy in a karmic relationship?

xxx