Why is (n-1)(n+1)=n^2-1?
12.06.2025 01:42

So, that’s a rectangle with sides 2 and 4.
xxx x
n^2 - 1
UN calls for investigation into killings near Gaza aid site - BBC
xxx
And you are left with almost a square. One less than the square of side n.
Move the nub up to the top:
6 early symptoms of fatty liver: What your body is telling you now - Times of India
xxxx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
xxx
How do flat Earthers explain the existence of other spherical planets?
xxx x
xx
n^2 - n + n - 1
Why do narcissists devour so much sugar (candy, ice cream, donuts, etc., in huge amounts at a time)?
(n - 1)(n + 1)
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:
Bethenny Frankel Reveals Her Teenage Daughter Bryn's Reaction to Her SI Swimsuit Look - People.com
xxxx