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

Last Updated: 21.06.2025 00:40

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

xxx

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

xxx x

So I’m getting piano lessons and my teacher wants me to get an upright piano instead of a keyboard. An upright piano is way above my price range, so what do I do? And what’s the difference between an upright piano and a keyboard?

xxxx

xxx

xx

If freedom of speech is absolute, how come it's not applied for private spaces and for the Internet?

Move the nub up to the top:

n^2 - n + n - 1

n^2 - 1

Had strong anxiety, heart palpitations, headaches and fear randomly over twin flame presence, 20 mins later he didnt acknowledge me saw a photo of a girl on the back of his phone faced up. Assume it was a new gf. Was this a warning of seperation?

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

(n - 1)(n + 1)

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

What's wrong with white women?

xxx x

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

xxxx

Kuorans can you write a sad story about kpop?

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