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Math Help - reciprocal

  1. #1
    Junior Member
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    Sep 2008
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    reciprocal

    The sum of a number and its reciprocal is 6.41. What is the number?
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  2. #2
    Newbie
    Joined
    Sep 2008
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    so that couldbe writen as x+1/x=6.41
    multiply both sides by x and you get x^2+1=6.41x
    rewrite it as x^2-6.41x+1=0
    and then use the quadratic formula to solve for x and you get x=6.25
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