Why is (n-1)(n+1)=n^2-1?
Last Updated: 03.07.2025 04:08

And you are left with almost a square. One less than the square of side n.
xxx
So, that’s a rectangle with sides 2 and 4.
xxxx
xxxx
n^2 - 1
Is depression a cause for always feeling tired?
xxx
xx
xxx x
Which current F1 drivers should switch teams based on historical patterns?
(n - 1)(n + 1)
Move the nub up to the top:
n^2 - n + n - 1
23 Doctors Who Said Something Crass, Cruel, Or CRINGEY To Their Patients - BuzzFeed
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
The basic answer is that you cross-multiply the values in each factor:
Hailee Steinfeld Weds Josh Allen In Three Tamara Ralph Couture Looks - Red Carpet Fashion Awards
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2