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

Last Updated: 02.07.2025 05:40

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

xxx

And you are left with almost a square. One less than the square of side n.

(n - 1)(n + 1)

US energy groups spend record sums on power plants to feed data centres - Financial Times

xxx x

xxx

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

I have Audacity 3.7.0 and was wondering how I can remove the vocals from a song while still keeping the hook (chorus)?

xx

xxx x

n^2 - 1

I've been listening to subliminals for 3 days. 5 videos before sleeping and after waking up. My left ear started hurting relatively bad. Is there an explanation or should I go to a doctor?

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

Move the nub up to the top:

USMNT, messy and meek, unravels quickly for its fourth straight defeat - The Washington Post

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

n^2 - n + n - 1

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

Walking more may lower your risk for chronic low back pain by 23%, study suggests - KSL.com

xxxx