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

Last Updated: 20.06.2025 00:32

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

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Move the nub up to the top:

How is a narcissist likely to handle situations when confronted with hard truths about themselves?

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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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Can ringing in the ears be a sign of spiritual awakening?

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

n^2 - n + n - 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 are the types of values?

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

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I’m British and I'm hella bummed about it. Wish I was American or even Canadian, ’cause let’s be real, Canada’s gonna end up part of the States anyway. What should I do?

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

n^2 - 1

Why does my crush always looks at me in a sad way whenever I talk with other boys, and if he catch me staring on him then he go and flirt with other girls and then check if I am looking at him?

(n - 1)(n + 1)