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

14.06.2025 11:28

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

(n - 1)(n + 1)

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

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How do the Sola Scrptura folks react to the Dead Sea Scrolls and other more recent discoveries of ancient Biblical texts not among those canonized by Martin Luther?

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

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n^2 - n + n - 1

Why was the rock band Kiss so successful?

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

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How can I stop overthinking and take action more quickly?

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Move the nub up to the top:

Why are men so attracted to big breasts?

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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

What is the reason behind some people referring to themselves as "nice guys" instead of simply being nice?

n^2 - 1