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

10.06.2025 02:51

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

xxxx

xxx x

xxxx

Delta Force selection is originally based on SAS selection, so why is there no brutal jungle phase for Delta Force? It seems like it's based only on the Brecon Beacons section.

n^2 - n + n - 1

n^2 - 1

Move the nub up to the top:

If Russia needs the resources to fund the war in Ukraine, why doesn’t it throw open its doors to visa free western tourism? Enough people would be interested, & it would start to get some hard currency as €, CHF, £, SEK, $, JPY in the tills at shops.

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

(n - 1)(n + 1)

xx

Samsung is struggling to sell the Galaxy S25 Edge - SamMobile

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

xxx

xxx x

Why do I sweat so much at the gym?

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.

xxx

What are some tips for making your husband fall madly in love with you again after going through the worst phase of your marriage?

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