Why is (n-1)(n+1)=n^2-1?
Last Updated: 17.06.2025 02:57
(n - 1)(n + 1)
n^2 - n + n - 1
So, that’s a rectangle with sides 2 and 4.
Have you ever been instructed/forced to crossdress for the benefit of others?
Move the nub up to the top:
The basic answer is that you cross-multiply the values in each factor:
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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
And you are left with almost a square. One less than the square of side n.
What would you do if you found out that someone had broken into your home while you were sleeping?
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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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What do you think of Obito Uchiha?
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What does 'Whose flesh is like the flesh of donkeys’ mean (Ezekiel 23:20)?
n^2 - 1