Why is (n-1)(n+1)=n^2-1?
15.06.2025 05:52
xx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
xxx
Should Pete Rose's record as the all-time hits leader be recognized and celebrated?
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
n^2 - n + n - 1
Rikishi calls for WWE writers to be fired for botching Jey Uso’s world title run - Cageside Seats
(n - 1)(n + 1)
So, that’s a rectangle with sides 2 and 4.
The basic answer is that you cross-multiply the values in each factor:
Do crossdressers like wearing pantyliners and tampons in their butts?
n^2 - 1
xxxx
xxx x
xxx
And you are left with almost a square. One less than the square of side n.
xxx x
Move the nub up to the top: