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

12.06.2025 02:18

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

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n^2 - n + n - 1

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Former Player Gives Definitive Verdict on Knicks Firing Tom Thibodeau - Athlon Sports

n^2 - 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

Libtards argue Obama deported more people than Trump, but if that were true why weren't they comparing Obama to Idi Amin?

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

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

Move the nub up to the top:

Why would a man be interested in an ordinary woman while there are very beautiful and fabulous women?

(n - 1)(n + 1)

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

Why do Democrats call any Republican "Magats", like they are subhuman?

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The Trump admin ordered a coal power plant to stay on past retirement. Customers in 15 states will foot the bill - CNN

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