Logo

Why is (n-1)(n+1)=n^2-1?

11.06.2025 01:22

Why is (n-1)(n+1)=n^2-1?

xxxx

xx

xxx x

Pablo Lopez To Miss Multiple Months With Teres Major Strain - MLB Trade Rumors

n^2 - 1

(n - 1)(n + 1)

So, that’s a rectangle with sides 2 and 4.

What is your favourite true story to tell at a party?

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

n^2 - n + n - 1

Chris Conley announces his retirement - NBC Sports

xxx

xxx

Move the nub up to the top:

Why aren't U.S. prisons more like Marine Corps boot camp, were every second of the day there are mandatory activities so that at night everyone is so tired they go to sleep until wakeup at 5:30 am? Would this make prisons safer for all?

xxxx

xxx x

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

What did your sister do to you that you can never forget?

The basic answer is that you cross-multiply the values in each factor: