Why is (n-1)(n+1)=n^2-1?
Last Updated: 27.06.2025 08:46
The basic answer is that you cross-multiply the values in each factor:
(n - 1)(n + 1)
xxx x
Where are the gay people in India?
And you are left with almost a square. One less than the square of side n.
xxx
xxx x
Which is better, a naked picture of some one you know or porn videos?
xxxx
xxxx
n^2 - n + n - 1
Why do wives cheat with black guys?
xx
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 - 1
Why can’t conservatives accept the fact that they are stupid?
xxx
So, that’s a rectangle with sides 2 and 4.
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