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

16.06.2025 01:43

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

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If you’re an atheist, what would be your motive in spreading atheism, and why would you care what others believe?

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

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

If you cloned 12 Michael Jordan's and 12 LeBron James' and had Team Jordan vs. James, which team would win the most games?

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

n^2 - 1

Do straight guys like to have sex with men when they smoke meth?

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

(n - 1)(n + 1)

This is a real question: Why do a lot of men/boys hate (yes, hate) women that voice their criteria in choosing a partner? Even when the criteria is sane and responsible. Besides it being, sadly, an effective mating strategy, why does it exist?

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Move the nub up to the top:

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What do most wives fantasize about?

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