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

13.06.2025 06:07

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.

Why is it rare for someone to despise both the Democrats and Republicans?

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(n - 1)(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

Why am I losing interest to get a job and to all my desires because of this spiritual awakening? How do I get through life because of it?

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n^2 - n + n - 1

How should one handle an uninvited guest at a small, intimate wedding ceremony? Is it appropriate to ask them not to attend?

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

n^2 - 1

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Why isn't the FBI raiding all Silicon Valley companies like Facebook, Twitter, Instagram, WhatsApp, TikTok, Reddit, Google, Yahoo, YouTube, Disqus, Wikipedia for censoring the World through their Ban cartel violating the constitution freespeech laws?

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

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

Why do many women like tall men?

Move the nub up to the top: