Results 1 to 5 of 5

Math Help - Simplified Form Question::Check

  1. #1
    Junior Member fluffy_penguin's Avatar
    Joined
    Sep 2007
    Posts
    39

    Simplified Form Question::Check



    I got

    4,7,x^8,y^18,y --All in radicals..that is a y to the 18th power

    Then my answer:

    2x^4y^9 radical 7y
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,607
    Thanks
    1574
    Awards
    1
    \sqrt {448x^8 y^{19} }  = \sqrt {2^6  \cdot 7x^8 y^{19} }  = 2^3 x^4 y^9 \sqrt {7y}
    Do you see how it works?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member fluffy_penguin's Avatar
    Joined
    Sep 2007
    Posts
    39
    Quote Originally Posted by Plato View Post
    \sqrt {448x^8 y^{19} } = \sqrt {2^6 \cdot 7x^8 y^{19} } = 2^3 x^4 y^9 \sqrt {7y}
    Do you see how it works?
    How did you get for the first part:
    2^3 I got everything except for the 2^3 I did get the 2 but no 3rd root.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,607
    Thanks
    1574
    Awards
    1
    Here is how it works.
    \begin{array}{l}<br />
 \sqrt {2^6 }  = 2^3  \\ <br />
 \sqrt {2^6 }  = \left( {2^6 } \right)^{\frac{1}{2}}  = 2^3  \\ <br />
 \end{array}<br />
    \left( {\frac{1}{2}} \right)\left( 6 \right) = 3
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member fluffy_penguin's Avatar
    Joined
    Sep 2007
    Posts
    39
    Ok. Seems I messed up because as I tried to find out how I got 4,7 I played around with the numbers again and got 4, 28. Is this the correct answer?

    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Simplified Radical Form.
    Posted in the Algebra Forum
    Replies: 2
    Last Post: March 7th 2008, 01:16 PM
  2. Factors and Simplest Form: Concept Check
    Posted in the Algebra Forum
    Replies: 4
    Last Post: January 23rd 2007, 12:38 AM
  3. math/check+ help! conic in standard form
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: December 5th 2006, 12:44 PM
  4. Replies: 2
    Last Post: April 21st 2006, 03:04 PM
  5. Factors and Simplest Form: Concept check
    Posted in the Algebra Forum
    Replies: 8
    Last Post: March 19th 2006, 02:06 PM

Search Tags


/mathhelpforum @mathhelpforum