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Math Help - Quick help needed

  1. #1
    Newbie
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    Quick help needed

    I cant solve this, and need some quick help.

    4*pi*X+2000/x^2=0

    Thanks in advance

    How do I simplify these two?

    2X(1000/x2+2x)
    2(x+2)(1000/x2+2x)
    Last edited by dipsy34; April 18th 2008 at 12:53 AM. Reason: Extra problem
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by dipsy34 View Post
    I cant solve this, and need some quick help.

    4*pi*X+2000/x^2=0

    Thanks in advance

    How do I simplify these two?

    2X(1000/x2+2x)
    2(x+2)(1000/x2+2x)
    Solve:

    4 \pi x+2000/x^2=0

    multiply through by x^2:

    4 \pi x^3+2000=0

    rearrange:

    x^3=-~\frac{500}{\pi}

    and you should be able to take it from there.

    (for the others first multiply out the brackets)

    RonL
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