Logo

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

12.06.2025 04:07

Why is (n-1)(n+1)=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

xx

xxx x

iOS 19: All the rumored changes Apple could be bringing to its new operating system - TechCrunch

xxx

Move the nub up to the top:

n^2 - n + n - 1

New study maps psychological pathway from childhood abuse to adolescent addiction - PsyPost

xxx

xxx x

n^2 - 1

Do you think this Labour Party is qualified to run our country?

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

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

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

Is depression a cause for always feeling tired?

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

xxxx

xxxx

Why do Muslims invade Western society?

(n - 1)(n + 1)