Results 1 to 3 of 3

Math Help - Help Please algebra exponents

  1. #1
    Junior Member wpcp15's Avatar
    Joined
    Oct 2005
    From
    born in Chicago , now in South Indiana
    Posts
    27

    Help Please algebra exponents

    Sorry its late but i just got off work

    I need help with some of my problems, Im not sure I did these right
    (^ means its an exponent)

    (a^3b^3) (ab)^-2



    -5x^3 y^3 z^4 over 20x^3 y^7 z^4
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by wpcp15 View Post
    Sorry its late but i just got off work

    I need help with some of my problems, Im not sure I did these right
    (^ means its an exponent)

    (a^3b^3) (ab)^-2
    Expand the second bracket:

    (a^3b^3) (ab)^{-2}=a^3 b^3 a^{-2}b^{-2}

    Collect powers of the variables:

    a^3 b^3 a^{-2}b^{-2}=a^{3-2}b^{3-2} =a^1 b^1=a\ b

    -5x^3 y^3 z^4 over 20x^3 y^7 z^4
    Bring all powers to the same level:

    <br />
{{-5 x^3 y^3 z^4} \over {20 x^3 y^7 z^4}} = \frac{-5}{20} x^3 y^3 z^4 x^{-3} y^{-7} z^{-4}<br />

    Collect powers of the variables:

    <br />
\frac{-5}{20} x^3 y^3 z^4 x^{-3} y^{-7} z^{-4}=\frac{-5}{20} x^{3-3} y^{3-7} z^{4-4}=\frac{-5}{20} y^{-4}=\frac{-5}{20 y^4} <br />

    RonL
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member wpcp15's Avatar
    Joined
    Oct 2005
    From
    born in Chicago , now in South Indiana
    Posts
    27
    Thanx, I started that way but i made a different turn
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Need help in Algebra with Exponents
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 22nd 2011, 01:58 PM
  2. Algebra/Exponents
    Posted in the Algebra Forum
    Replies: 4
    Last Post: March 9th 2010, 07:30 PM
  3. Algebra with exponents
    Posted in the Algebra Forum
    Replies: 3
    Last Post: February 27th 2009, 02:29 PM
  4. algebra problem with exponents
    Posted in the Algebra Forum
    Replies: 1
    Last Post: December 11th 2008, 10:59 AM
  5. Algebra with huge exponents
    Posted in the Algebra Forum
    Replies: 6
    Last Post: December 6th 2007, 09:31 AM

Search Tags


/mathhelpforum @mathhelpforum