Logo

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

12.06.2025 05:10

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

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

xxx x

n^2 - 1

Which document should be pointed out to a holocaust denier?

xxxx

n^2 - n + n - 1

xxx

What shouldn't you Google?

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

xxx

(n - 1)(n + 1)

Ryan Reynolds’ ‘Animal Friends’ Delayed to 2026 at Warner Bros. - The Hollywood Reporter

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

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

What are your thoughts on the dating app "scam"?

Move the nub up to the top:

xxxx

xx

Diabetes drug shows benefits for patients with liver disease - Medical Xpress

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