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

11.06.2025 12:27

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

(n - 1)(n + 1)

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Were the 1980s as uptight and prudish as movies and TV shows make them out to be? When I think of 80s culture, I think about a very "icky" judgmental yuppie status quo time period.

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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What are the signs of covert narcissistic abuse that most people miss?

n^2 - 1

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

Move the nub up to the top:

Why do we still feel attached or jealous when a covert narcissist moves on, even after realizing their toxicity and the suffering they caused?

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

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

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Do the British people realize how much American people absolutely despise them?

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

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n^2 - n + n - 1

When was you wife swapping fantasy started?

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