Why is (n-1)(n+1)=n^2-1?
08.06.2025 06:09
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n^2 - n + n - 1
(n - 1)(n + 1)
And you are left with almost a square. One less than the square of side n.
n^2 - 1
Is it possible for buyers to negotiate after an inspection if the appraisal is lower than expected?
Move the nub up to the top:
If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2
So, that’s a rectangle with sides 2 and 4.
Why is money considered to be the root of all evil?
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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The basic answer is that you cross-multiply the values in each factor:
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