Logo

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

14.06.2025 00:11

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

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

(n - 1)(n + 1)

xxx x

What is treasury?

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

xxxx

xxx x

Google expands voluntary buyout offers, orders some remote workers to return to office amid AI race - New York Post

xxx

xxx

n^2 - 1

What would happen if the Soviet Union had simply annexed Manchuria after World War 2 or kept it independent as a puppet state allied them and separate from China as China was too weak too oppose it anyway?

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

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

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

Observations from Titans Minicamp on Wednesday - Tennessee Titans

xx

Move the nub up to the top:

xxxx

Why do so many 18 to 29-year-old men struggle in dating?

n^2 - n + n - 1