Results 1 to 7 of 7

Math Help - Help with an exponent

  1. #1
    Newbie
    Joined
    Oct 2011
    Posts
    6

    Help with an exponent

    Im trying to learn algebra because i slacked in highschool so my friend is teaching me but is at school and i cant figure out how to do a problem. my issue is im not sure what to do with the 3/2. The directions say to "Perform the operations and simplify"





    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Siron's Avatar
    Joined
    Jul 2011
    From
    Norway
    Posts
    1,250
    Thanks
    20

    Re: Help with an exponent

    Do you know the important basic rules like x^{a}\cdot x^{b}=x^{?}, (x^{a})^{b}=x^{?} and \frac{x^{a}}{x^{b}}=x^{?}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Joined
    Oct 2009
    Posts
    5,540
    Thanks
    780

    Re: Help with an exponent

    Use the following identities:

    (uv)^a=u^av^a

    (u^a)^b=u^{ab}

    \frac{u^a}{u^b}=u^{a-b} if u\ne0.

    So, every time you see an expression that matches the left-hand side of an identity, you can rewrite the expression. For example, (2x^2)^{3/2} matches (uv)^a where u=2, v=x^2 and a=3/2. Therefore, (2x^2)^{3/2}=2^{3/2}(x^2)^{3/2}.

    It is also pretty easy to use mathematical notation on this forum. For example, [TEX]2^{3/2}(x^2)^{3/2}[/TEX] produces 2^{3/2}(x^2)^{3/2}. Note that if the exponent consists of more than one symbol, it has to be wrapped in {}. You can also click "Reply with Quote" button to see the code of any post.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Oct 2011
    Posts
    6

    Re: Help with an exponent

    My friend ended up being able to help me, thanks anyways. sorry for the late response.

    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,790
    Thanks
    1531

    Re: Help with an exponent

    Well, what is your answer?
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Newbie
    Joined
    Oct 2011
    Posts
    6

    Re: Help with an exponent

    2 over x
    Follow Math Help Forum on Facebook and Google+

  7. #7
    MHF Contributor Siron's Avatar
    Joined
    Jul 2011
    From
    Norway
    Posts
    1,250
    Thanks
    20

    Re: Help with an exponent

    Quote Originally Posted by Ritzon View Post
    2 over x
    Correct!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: April 27th 2011, 04:53 PM
  2. exponent
    Posted in the Pre-Calculus Forum
    Replies: 6
    Last Post: May 31st 2010, 08:25 AM
  3. [SOLVED] Help dividing exponent by exponent
    Posted in the Algebra Forum
    Replies: 2
    Last Post: January 29th 2010, 11:20 AM
  4. -1 to an exponent
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: August 19th 2009, 09:36 AM
  5. Replies: 1
    Last Post: August 19th 2008, 08:41 AM

Search Tags


/mathhelpforum @mathhelpforum