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

13.06.2025 01:57

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

xxx

n^2 - 1

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

What would happen if the US government told the British government in no uncertain terms all RAF bases with USAF personnel now must follow the Constitution and us law, and if the UK tried to defy this, the US military would directly attack the UK?

Move the nub up to the top:

xx

xxx x

A Biologist Spotlights The World’s Most Aggressive Bird. Hint: It’s Flightless, It’s Not The Ostrich, And It’s Been Known To Kill People - Forbes

(n - 1)(n + 1)

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

xxx x

What are the pros and cons of living in Male, Maldives?

xxxx

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

xxxx

How do I develop the patience to read books?

xxx

n^2 - n + 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

How do I confess to my crush who had a traumatic past with his previous partner without losing the friendship?

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