Logo

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

11.06.2025 01:33

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

n^2 - n + n - 1

Move the nub up to the top:

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

How common are novels, animes, or mangas, that are both coming of age and thriller? What do you think of these kinds of stories? What are some examples?

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

xx

Hypertension: New drug shows strong results in managing blood pressure - Medical News Today

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

xxx x

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

What is world history that not many people know about?

xxx

(n - 1)(n + 1)

xxxx

Where did Kamala Harris learn how to change positions so quickly? Did she learn it from working in the world's oldest profession?

n^2 - 1

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

xxx x

Why can't flat-Earthers create an agency like NASA to explore Earth to prove it is flat? What's preventing them from doing so?

xxxx