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

14.06.2025 03:59

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

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(n - 1)(n + 1)

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What is the story behind bhai dooj?

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How has your life changed for the past 10 years? Can you share your #10year challenge? Is your life better, worse, or still hopeful?

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

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

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

Since the rise of feminism, the dating market has shifted to the disadvantage of men and that is causing this incel phenomenon. Why do women not understand how lonely the majority of men are?

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n^2 - n + n - 1

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

What are some downsides to living in Newfoundland and Labrador (besides the weather)?

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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

n^2 - 1

Is it possible for people who claim to be genuine and honest to actually not be? If so, why do they behave this way?

Move the nub up to the top: