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

14.06.2025 00:42

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

n^2 - 1

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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

How did your marriage end?

n^2 - n + n - 1

(n - 1)(n + 1)

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When gallery photos are deleted at the same time, why are Google photos also deleted?

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

Move the nub up to the top:

Republican Trump is a billionaire, president, won't be held accountable for multiple felonies, and pretty much has whatever he wants. So why is he always whining and crying about stupid, pointless stuff? Is he incapable of happiness?

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

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 can one translate "You're welcome" from English to French using formal language? Are there any other ways to say this phrase in a more polite manner?

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

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Why do you think most harem anime and manga have lame male protagonists that would be considered losers and pathetic by most people?

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