Why is (n-1)(n+1)=n^2-1?
13.06.2025 16:51

n^2 - n + n - 1
xxxx
n^2 - 1
Is Twilight appropriate for a 12-year-old?
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
xx
xxx
Why do people have polyamorous relationships?
(n - 1)(n + 1)
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
So, that’s a rectangle with sides 2 and 4.
Why is Reddit blocked by the Indonesian government?
xxx x
xxxx
xxx x
How do scammers communicate? Do they have a specific language or slang?
The basic answer is that you cross-multiply the values in each factor:
Move the nub up to the top:
xxx
And you are left with almost a square. One less than the square of side n.