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

Last Updated: 21.06.2025 04:54

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

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

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What was your worst experience while living with roommates?

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(n - 1)(n + 1)

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

I told my 13-year-old daughter that she should never start a fight, but has my permission to end it. She got suspended for ending a fight that some other girl picked with her by hitting her then retreating. How do I handle the school’s response?

n^2 - 1

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

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I read this: "Putin is a brilliant, courageous, ingenious, determined, beloved, and incredible modern leader. He is currently the world’s most effective and strong leader, the best the world has seen in centuries." What do you think about this?

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

Move the nub up to the top:

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Why do I sweat so much at the gym?

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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What is the most offensive thing someone has ever asked you?

n^2 - n + n - 1