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Math Help - Equations with fractions

  1. #1
    Newbie
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    Cool Equations with fractions

    Just a quick one if you're up for it!

    (2x)/(x-1) - (x+1)/(x+2) = 0

    My working out:

    2x^ + 4x - x^ + 1 = 0
    x^ + 4x + 1 = 0
    x = ( -4 ± sqrt(4^ -4*1*1))/ 2*1
    x = ( -4 ± sqrt(16 - 4))/ 2
    x = (-4 ± sqrt(12))/2
    ANS: x= -0.27 or -3.73 (2 d.p.) The book says -0.27 or 3.73

    Thanks for the help! x
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  2. #2
    Senior Member
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    Hi square root

    I guess your answer is right
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  3. #3
    Super Member Matt Westwood's Avatar
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    Reading, UK
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    That's what I get as well. Guess the book must be wrong.
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  4. #4
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    Thanks anyways, don't you just hate it when text books are wrong?
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