Why is (n-1)(n+1)=n^2-1?
Last Updated: 17.06.2025 12:32
n^2 - n + n - 1
xxx
xxxx
Why do women consider 80% of men as unattractive?
xxx x
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And you are left with almost a square. One less than the square of side n.
Why are Americans obese? Is it the food or is it the psychology?
The basic answer is that you cross-multiply the values in each factor:
xxx
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
What is the most memorable thing that happened in your college days?
n^2 - 1
xxxx
xxx x
Do women like men who have slept with many women?
So, that’s a rectangle with sides 2 and 4.
Move the nub up to the top:
(n - 1)(n + 1)
The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2