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msth 117

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Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. You reached 1 for an answer, didn’t you? How does this number game work?

  • msth 117 -

    (n^2-1)/(n-1) - n = ?

    (n-1)(n+1)/(n-1) -n =?
    n+1-n = n

    duh

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