Logo

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

12.06.2025 03:05

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

n^2 - 1

xx

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

Why is Canada letting too many Indians in Canada?

Move the nub up to the top:

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

xxxx

Jason Sudeikis Remembers Uncle George Wendt as “an Incredible Influence” - The Hollywood Reporter

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

xxx

xxxx

What are some things that children used to wait for, but are no longer common in today's society?

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

(n - 1)(n + 1)

xxx x

I see ugly guys dating gorgeous, "hot" women all the time. I, too, am not very attractive but I'm not doing well with the ladies. What's their secret?

xxx x

n^2 - n + n - 1

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

Is Trump the greatest spiritual leader since Jesus?

xxx