Why is (n-1)(n+1)=n^2-1?
Last Updated: 03.07.2025 04:54
xxx
xxx x
xxxx
Accidental discovery at New York planetarium unlocks secret into universe’s inner workings - PBS
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
xx
xxx x
Why do some people have loving parents and some do not?
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.
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
What is the most heartbreaking thing your child has told you?
xxxx
So, that’s a rectangle with sides 2 and 4.
n^2 - 1
How do I run away? I'm 15 and live in Oklahoma.
n^2 - n + n - 1
xxx
(n - 1)(n + 1)
This Common Herb May Hold the Key to Fighting Alzheimer’s, According to a New Study - Food & Wine
Move the nub up to the top: