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

14.06.2025 02:34

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

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

Move the nub up to the top:

Do individuals with borderline personality disorder have awareness of their actions or do they believe their behavior is normal?

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

n^2 - n + n - 1

n^2 - 1

What makes you feel guilty the most?

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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As an atheist don't you really feel fear for committing sins which are not violating national laws?

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

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(n - 1)(n + 1)

Why do American conservatives say that America is a constitutional republic and not a democracy? Would it not make sense to call America a constitutional republican democracy?

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

Why did my ex of 2 years move on so fast after he left me? Why does he act so cold towards me, and as if I don't exist?

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