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

10.06.2025 01:53

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.

Where did Noah build the Ark? Was it in a desert or near water?

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

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

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Move the nub up to the top:

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

Why do so many men on the internet try to compete with women, or try to "humble" and bash them? There's so many videos across my tiktok and YouTube of men claiming how they're wanting to get back at women and put them in thier place.

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

Where did Kamala Harris learn how to change positions so quickly? Did she learn it from working in the world's oldest profession?

(n - 1)(n + 1)

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Why do US military soldiers/officers have a chest full of medal ribbons when they probably haven't been in a combat situation? Are the medals for attendance, good behaviour, or long service perhaps?

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