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

15.06.2025 16:42

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

Move the nub up to the top:

xxx

xxxx

Why do people keep saying they have evidence and have presented it that proves you're wrong even though they have none and haven't presented anything? Furthermore, what do they think you're wrong about?

xxx

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

n^2 - n + n - 1

What traits are considered unattractive? Which traits are typically seen as attractive and why?

xxx x

xx

n^2 - 1

Islam is definitely a very anti-LGBTQ religion, so why don't liberals ever stage pro-LGBTQ demonstrations at mosques or at the consulates/embassies of Muslim countries?

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

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

xxx x

My friend asked my crush and he said my crush hates me but not in a rude way. What does that mean?

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

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

(n - 1)(n + 1)

Why do people stay in cults after they have joined?

xxxx