Logo

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

10.06.2025 11:37

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

Move the nub up to the top:

n^2 - n + n - 1

xxx x

DC Mayor Bowser’s message for Shakira after WorldPride cancellation: ‘Get yourself here’ - WTOP

(n - 1)(n + 1)

n^2 - 1

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

Why are so many people getting sick from eating cucumbers? - NBC News

xxx x

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

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

French Open: No. 1 Aryna Sabalenka ends Swiatek's reign and meets No. 2 Coco Gauff for the trophy - AP News

xxxx

xxx

xx

Grandfather Diagnosed With Stage Four Lung Cancer Becomes Free of Disease After Immunotherapy - Good News Network

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

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

xxx

How severely should I get punished? Please describe throughly. Today I got my result of my test nd I found out that I failed in 2 subjects, my parents are currently in abroad nd I lied to them about the fail but I feel guilty now.

xxxx