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

13.06.2025 10:21

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

xxxx

n^2 - n + n - 1

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

Did you know God exists? 900+ answers later and no atheist has yet to be successful. Day 8 of asking Atheists to provide a SINGLE argument that demonstrates a cause for the beginning of the universe while avoiding the problem of infinite regression.

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

n^2 - 1

Google's Find Hub finally gets AirTag-like UWB precision finding - Android Police

xxx

Move the nub up to the top:

xxx x

Why are Republicans such intolerant people?

(n - 1)(n + 1)

xxx x

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

I am skinny, I have been doing 100 pushups a day for more than a month and am seeing very few results, everything is so unfair, I workout more than anyone I know and am still skinny, why cant I build muscle?

xxx

xxxx

xx

Why does he text me first but when I never text first he gets mad?

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