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How come I can't stay sober?

Because the daily struggles of life sober seems do-able. Or at least not life threatening so it’s en...

Why can't I lose weight?

There are many reasons why weight loss might be difficult, including hormonal imbalances, stress, sl...

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 -...