Logo

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

14.06.2025 08:43

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

xx

n^2 - n + n - 1

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

What is your craziest/worst Halloween story?

Move the nub up to the top:

xxxx

xxxx

If there was only one man remaining on the Earth, would this be regarded as extinction?

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

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

What are some hard rock or heavy metal bands that are overrated?

xxx

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

(n - 1)(n + 1)

How should one handle a situation where they suspect their partner of cheating, but their partner denies it and claims it is all in their head?

n^2 - 1

xxx

xxx x

I see lots of pictures of women who have huge clits are they real or what?

xxx x