Why is (n-1)(n+1)=n^2-1?
Last Updated: 16.06.2025 09:45
xxx
xxx x
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
Why am I sweating so much at night even though my room is really cold?
(n - 1)(n + 1)
So, that’s a rectangle with sides 2 and 4.
xxxx
What would have happened if Shin was a good movie instead of a bad one?
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 x
xxxx
What is the one thing you don't understand that others do?
n^2 - n + n - 1
Move the nub up to the top:
n^2 - 1
Have you ever been humiliated in front of a group of girls and enjoyed it?
The basic answer is that you cross-multiply the values in each factor:
xx
xxx
What are some common examples of condescending behavior?
And you are left with almost a square. One less than the square of side n.