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

12.06.2025 01:12

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

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

(n - 1)(n + 1)

Why do atheists always argue about the existence of suffering in the world as meaning God doesn't exist when it doesn't prove anything?

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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Move the nub up to the top:

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n^2 - 1

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n^2 - n + n - 1

What is price of the "liberal celebrities" e.g. Bill Maher, Seth Meyers, Jon Stewart, Trevor Noah, Jimmy Kimmel, Desi Lydic etc. to join the great MAGA movement like Stephen Colbert who wanted to European ambassadorship to turn back on "the Left"?

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

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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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Gun owners, imagine if an attacker comes to your home and takes your gun to use against you before you had the chance to pick it up. Would you regret owning a gun?

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