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

09.06.2025 00:33

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

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Move the nub up to the top:

Why do people stop working towards achieving their dreams?

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

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

Do you have any attributes quirks sensitivities abilities etc that you've come to learn most people don't experience? E.g. dream with subtext or experience de ja vu regularly or know you experience life very differently from those around you etc?

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n^2 - 1

(n - 1)(n + 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

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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

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

Is it possible to become homeless after being released from jail or prison in the United States?

n^2 - n + n - 1