Why is (n-1)(n+1)=n^2-1?
12.06.2025 03:07

xx
xxxx
xxx
What parts of the Bible, if any, are inappropriate to read to children? Why?
(n - 1)(n + 1)
n^2 - 1
xxx x
So, that’s a rectangle with sides 2 and 4.
xxx x
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
Is there an MBTI personality that is more or less likely to handle stress?
And you are left with almost a square. One less than the square of side n.
Move the nub up to the top:
n^2 - n + n - 1
Doritos, Cheetos, M&Ms and other popular snacks will soon have warning labels in Texas - KHOU
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2
The basic answer is that you cross-multiply the values in each factor:
xxxx
Shelved Europa Lander mission concept could be used to explore Enceladus instead - Phys.org
xxx