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

14.06.2025 10:08

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

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

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

What do you think of Vance using a clip of an embarrassed teenager from almost 20 years ago in an attempt to bully Kamala Harris?

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

Move the nub up to the top:

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Has any man licked his wife's vagina while another man had sex with her?

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n^2 - n + n - 1

Do you think a lot of sociopaths' parents kill themselves for having brought such disgusting evil into the world? How much shame and disgust must they carry?

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If you’re an atheist, what would be your motive in spreading atheism, and why would you care what others believe?

(n - 1)(n + 1)

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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: