Why is (n-1)(n+1)=n^2-1?
Last Updated: 02.07.2025 08:02
n^2 - 1
xxx x
The basic answer is that you cross-multiply the values in each factor:
How Dakota Johnson Is Doing After Chris Martin Split - BuzzFeed
And you are left with almost a square. One less than the square of side n.
xxx x
(n - 1)(n + 1)
Why do wives cheat with black guys?
Move the nub up to the top:
xxxx
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
Two space vets added to Astronaut Hall of Fame as one awaits launch - collectSPACE.com
xxx
xx
xxxx
Early Humans Did More Than Just Walk—They Mastered a Surprising Skill Set - Indian Defence Review
xxx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
n^2 - n + n - 1
Which job has the potential to become rich easily?
So, that’s a rectangle with sides 2 and 4.