Logo

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

12.06.2025 00:59

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

Move the nub up to the top:

xxx

The basic answer is that you cross-multiply the values in each factor:

Is it possible for buyers to negotiate after an inspection if the appraisal is lower than expected?

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

n^2 - 1

xxxx

Fifth measles case in Georgia confirmed in family member of person with earlier case - 11Alive.com

xxx x

xx

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

AI Links Early Life Risks to Behavioral Challenges at Age Five - Neuroscience News

xxx

xxxx

xxx x

I just cannot wake up early, even if I sleep on time. What should I do?

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

(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

What do you think are the real reasons Matt Gaetz just withdrew his name for Attorney General in the upcoming Trump administration?

n^2 - n + n - 1