Logo

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

Last Updated: 18.06.2025 05:57

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

xxx

xx

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

Why are people with borderline personality disorder so capable of ripping someone apart with their words?

xxxx

xxxx

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

Why are Democrats opposed to restrictions on contraception such as requiring people to be over 18 to buy contraception, banning mail order contraception, and requiring a prescription from a doctor?

n^2 - n + n - 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

xxx

What are some ways to cope with paranoid thoughts about being gangstalked or targeted individuals?

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

(n - 1)(n + 1)

Move the nub up to the top:

My dog is 2 weeks old. He's not eating, moving and always sleeping and I can't take him to a vet. What should I do?

n^2 - 1

xxx x

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

Is it wise to choose your family over your honor?

xxx x