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

Last Updated: 26.06.2025 03:10

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

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

n^2 - n + n - 1

What is the reasoning behind conspiracy theorists claiming that there were multiple shooters involved in the JFK assassination?

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

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

What kind of person makes you think "how come there are people like that"?

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

Move the nub up to the top:

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Isn't it ironic people always talk about how much women hate Donald Trump, when almost any of them would marry him if they could? What he said in the 2005 Billy Bush video, almost every woman would share the sentiment if it got them his lifestyle.

(n - 1)(n + 1)

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5 Things to Know Before the Stock Market Opens - Investopedia

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n^2 - 1

'Optical neural engine' can solve partial differential equations - Tech Xplore

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