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Math Help - solving for X

  1. #1
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    solving for X

    can someone help with next step? plz
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  2. #2
    Junior Member Researcher's Avatar
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    Quote Originally Posted by realistic View Post
    can someone help with next step? plz
    y=p/(k-x)
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  3. #3
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    back of book has a different answer
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  4. #4
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    Hello realistic
    Quote Originally Posted by realistic View Post
    can someone help with next step? plz
    x = k - \frac{\sqrt{pz}}{y}

    \Rightarrow x-k=-\frac{\sqrt{pz}}{y}

    \Rightarrow k-x=\frac{\sqrt{pz}}{y}

    \Rightarrow (k-x)y=\sqrt{pz}

    \Rightarrow y = \frac{\sqrt{pz}}{k-x}

    Grandad
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  5. #5
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    Quote Originally Posted by Grandad View Post
    Hello realistic x = k - \frac{\sqrt{pz}}{y}

    \Rightarrow x-k=-\frac{\sqrt{pz}}{y}

    \Rightarrow k-x=\frac{\sqrt{pz}}{y}

    \Rightarrow (k-x)y=\sqrt{pz}

    \Rightarrow y = \frac{\sqrt{pz}}{k-x}

    Grandad
    on step 2 how did you get the negative away ?
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  6. #6
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    Hello realistic
    Quote Originally Posted by realistic View Post
    on step 2 how did you get the negative away ?
    Multiply both sides by -1, noting that -(x-k) = k-x.

    Grandad
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