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Controversial BTS opinions?

#🍵 i’m on the run with you ࣪ ୧ ‧₊˚ my sweet love ! 🌿 iF BTS WERE’NT AS POPULAR EVERYONE WOULD RA...

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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 -...