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

Last Updated: 18.06.2025 04:57

Why is (n-1)(n+1)=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

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Why do most atheists in debates with theists take Bible verses out of context much of the time? Are they lying maliciously or do they not understand theology enough to understand the meaning?

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

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

Can a relationship really last forever?

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

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

Is there an MBTI personality that is more or less likely to handle stress?

n^2 - 1

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Move the nub up to the top:

What was your most memorable combat mission during the Vietnam War?

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n^2 - n + n - 1

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Do women lack the mental strength to succeed at STEM? There seems to be few women at STEM and more women leave STEM after a time of working at it. How can it be just sexism if women aren't banned from entering?

(n - 1)(n + 1)