Why is (n-1)(n+1)=n^2-1?
Last Updated: 19.06.2025 01:36
xxxx
The basic answer is that you cross-multiply the values in each factor:
xxx x
What is it like to have an insanely beautiful girlfriend?
xxx
xxx x
n^2 - 1
Have you ever had a bad gut feeling about someone and it was right?
xx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
Move the nub up to the top:
How do flat Earthers explain the existence of other spherical planets?
xxx
n^2 - n + n - 1
(n - 1)(n + 1)
What is your most erotic sex story?
And you are left with almost a square. One less than the square of side n.
xxxx
So, that’s a rectangle with sides 2 and 4.
Don't you think Democrats are so full of it stool softener and an enema couldn't help them?
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2