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

Last Updated: 19.06.2025 07:53

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

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n^2 - 1

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

How can one justify in Sweden that total subsidies for public green energy initiatives being approximately 8.2 billion SEK per year? Electric cars at market price typically cost an average of 500,000 SEK which is above household budgets.

n^2 - n + n - 1

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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

Why do I sweat a great deal while exercising the same on some days and not so much on others?

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

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

What defines the k'vanna of the Book of בראשית?

(n - 1)(n + 1)

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I think that being gay is wrong, but I treat gay people respectfully like any other person. Is it homophobic? Or offensive in any kind of way? Aren’t disagreement and discrimination two different things?

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Move the nub up to the top:

Why am I sweating so much at night even though my room is really cold?

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