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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 -...

Why is rap* a crime?

So if this guy Reynhard Tambos Maruli Tua Sinaga got you and drugged you kidnapped you brought you t...

How do I get my body in shape?

Get the Ball Rolling I’d argue that the warmup is the most important part of a workout. The hardest...