Why is (n-1)(n+1)=n^2-1?
11.06.2025 12:32

n^2 - 1
xxx
xxxx
Why do Democrats call any Republican "Magats", like they are subhuman?
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
The basic answer is that you cross-multiply the values in each factor:
xxx x
Move the nub up to the top:
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
(n - 1)(n + 1)
What's wrong with white women?
n^2 - n + n - 1
xxx x
xx
Liam Coen: Defensive coaches asking for more of Travis Hunter - NBC Sports
xxx
xxxx
And you are left with almost a square. One less than the square of side n.
What transforms the philosophical intellect?
So, that’s a rectangle with sides 2 and 4.