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Posted by on Thursday, November 4, 2010 at 9:51pm.

(10/((n^2)-1)+((2n-5)/(n-1))=(2n+5)/(n+1)

  • calculus - , Thursday, November 4, 2010 at 10:52pm

    notice that n^2-1 = n(n+1)(n-1)
    so the LCD is n^2-1

    multiply by the LCD

    10 + (2n-5)(n+1) = (2n+5)(n-1)
    10 + 2n^2 -3n - 5 = 2n^2 +3n - 5
    10 = 6n
    n = 5/3

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