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    I am getting myself completely muddled on a question, is there any chance someone could go through the method if i give the question?

    anyway its this

    X= {(S^1/3)^3/4} x {(T^1/4)^-1}
    -------------------------------
    {(S^-1/4)^-1} / {(T^1/2)^4}


    its a big complicated mess trying to type it on a computer, anyway the dashes are meant to symbolise a divide, the top 2 divided by the bottom 2, the 2 on the top are multiplied and the 2 on the bottom of divided.

    anyways dunno if anyone will, bit cheeky, but its proper confusing me...

    if anyone has this book this is K.A.STROUD FOUNDATION MATHEMATICS, page 81 unit 7...
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    Start by using the rule (a^b)^c = a^{bc}:

    \dfrac{(S^\frac{1}{3})^\frac{3}{  4} \times (T^\frac{1}{4})^{-1}}{(S^\frac{-1}{4})^{-1} \div (T^\frac{1}{2})^4} = \dfrac{S^\frac{1}{4} \times T^\frac{-1}{4}}{S^\frac{1}{4} \div T^2}

    Notice that this is the same as

    S^\frac{1}{4} \times T^\frac{-1}{4} \div \dfrac{S^\frac{1}{4}}{T^2}

    = S^\frac{1}{4} \times T^\frac{-1}{4} \times \dfrac{T^2}{S^\frac{1}{4}}

    = S^\frac{1}{4} \times T^\frac{-1}{4} \times T^2 \times \dfrac{1}{S^\frac{1}{4}}

    Notice that the S^\frac{1}{4}s cancel. This leaves you with:

    T^\frac{-1}{4} \times T^2 which you should be able to simplify.
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    you are a god!

    i was using the rule where if its to the power minus 1 that means it should be 1 over the number.... and it was confusing me totally..

    nevermind, thanks a lot anyway!

    by the way, how do you write the formulas like you have done?
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    Your way was probably correct as well but when you have a long, complicated expression to simplify, it can be easy to get muddled and make mistakes. To write the formulas, there's some instructions on http://www.thestudentroom.co.uk/wiki/LaTeX and you could also click the Quote button next to my post to see the code I used.
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    (Original post by samwalsh)
    you are a god!

    i was using the rule where if its to the power minus 1 that means it should be 1 over the number.... and it was confusing me totally..

    nevermind, thanks a lot anyway!

    by the way, how do you write the formulas like you have done?
    If you are dealing with fractions to the power minus 1 then simply invert the fraction.

    ( \dfrac{5}{4})^{-1} = \dfrac{4}{5}
 
 
 
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