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

08.06.2025 14:45

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

xxxx

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 - 1

6 Foods You Should Be Eating for Bone Health, According to Dietitians - Yahoo

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

xxx x

(n - 1)(n + 1)

Gun owners, imagine if an attacker comes to your home and takes your gun to use against you before you had the chance to pick it up. Would you regret owning a gun?

xxxx

xxx x

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

What does Jesus mean in Revelation 3:3 when He states, "Wake up! Strengthen what remains and is about to die, for I have found your deeds unfinished in the sight of my God?"

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^2 - n + n - 1

‘King of the Hill’ voice actor Jonathan Joss is fatally shot in Texas - The Washington Post

Move the nub up to the top:

xxx

xxx

For the first time, an external factor turns a male mammal into a female - EL PAÍS English

xx