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

The basic answer is that you cross-multiply the values in each factor: (n - 1)(n + 1) n^2 - n + n -...

© you're so funny!

side note : this is a slight trauma dump and heavy silly shit, so don't come at me ty. thanks ! i y...

Is marijuana bad for you?

Is it better to be STRESSED not smoking marijuana, or to smoke marijuana and live a stress free life...