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Math Help - potens

  1. #1
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    potens

    Expression profile as a power of 5. If not so, then
    x=?



    i dont really know how to especially write 3sqrt(5) on another form :S
    if i got it right i can write it like 5^1/3?
    Last edited by Petrus; September 19th 2012 at 07:39 AM.
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    Re: potens

    Numerator: 5^1 * (5^2)^3 * 5^(1/2) = 5^1 * 5^6 * 5^(1/2) = 5^(1 + 6 + 1/2) = 5^(15/2)

    Let you have the fun of doing the denominator!
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    Re: potens

    Quote Originally Posted by Petrus View Post
    Expression profile as a power of 5. If not so, then
    x=?



    i dont really know how to especially write 3sqrt(5) on another form :S
    if i got it right i can write it like 5^1/3?
    Yes, \displaystyle \begin{align*} \sqrt[3]{5} = 5^{\frac{1}{3}} \end{align*}
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    Re: potens

    5^(1 + 6 + 1/2) = 5^(15/2)
    idk but maybe stupid question how can that become 15/2? i cant figoure it out how u did so
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  5. #5
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    Re: potens

    Quote Originally Posted by Petrus View Post
    5^(1 + 6 + 1/2) = 5^(15/2)
    idk but maybe stupid question how can that become 15/2? i cant figoure it out how u did so
    Sure you know there are 15 halves in 7 and a half...
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    Re: potens

    Quote Originally Posted by Prove It View Post
    Sure you know there are 15 halves in 7 and a half...
    ehmm sorry but i did not understand what u mean, any way u can put it on more simple words^^? (english is my weak language)
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    Re: potens

    If you had 7 and a half pies, and if you cut each of the whole pies in half, how many halves would you then have?
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    Re: potens

    Quote Originally Posted by Prove It View Post
    If you had 7 and a half pies, and if you cut each of the whole pies in half, how many halves would you then have?
    over 9000 =D joke hahaha u made my day
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    Re: potens

    Quote Originally Posted by Petrus View Post
    ehmm sorry but i did not understand what u mean, any way u can put it on more simple words^^? (english is my weak language)
    Sorry Petrus, but if you don't understand that 7.5 = 7 1/2 = 15/2,
    then speaking to you in any language will not help: you need serious classroom help.
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    Re: potens

    holy i cant finish the last one ehmm
    5^1/3*5^15?
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  11. #11
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    Re: potens

    Quote Originally Posted by Petrus View Post
    holy i cant finish the last one ehmm
    5^1/3*5^15?
    Do you not know this rule: a^x * a^y = a^(x + y) ?

    Your 5^1/3 needs brackets: 5^(1/3) ; no brackets means 5^1 times 3

    So 5^(1/3) * 5^15 = 5^(1/3 + 15) = 5^(15 1/3) = 5^(46/3)

    WHAT does "potens" mean ?????
    Last edited by Wilmer; September 19th 2012 at 10:38 AM.
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    Re: potens

    Quote Originally Posted by Wilmer View Post
    Do you not know this rule: a^x * a^y = a^(x + y) ?

    Your 5^1/3 needs brackets: 5^(1/3) ; no brackets means 5^1 times 3

    So 5^(1/3) * 5^15 = 5^(1/3 + 15) = 5^(15 1/3) = 5^(46/3)

    WHAT does "potens" mean ?????
    ty ehmm potens is on swedish i was just lazy to google translate but in english it means Exponentiation
    so now i got 5^(15/2)/5^(46/3) and next i do is 5^(15/2)-(46/3)?
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    Re: potens

    nvm finish it sorry for being so stupid but i am just tired and not really good on math ohh well
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