Results 1 to 3 of 3

Math Help - unlike radicands...possible to do anything??

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    1

    Question unlike radicands...possible to do anything??

    I have a problem that just kinda bugs me.

    *= radical sign

    5*6 + 2*10

    is there anything that you can do with that??
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,623
    Thanks
    428
    Quote Originally Posted by hollyberry47 View Post
    I have a problem that just kinda bugs me.

    *= radical sign

    5*6 + 2*10

    is there anything that you can do with that??
    \sqrt{2}(5\sqrt{3} + 2\sqrt{5})

    not much of a change, but that's about it.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1
    Quote Originally Posted by hollyberry47 View Post
    I have a problem that just kinda bugs me.

    *= radical sign

    5*6 + 2*10

    is there anything that you can do with that??
    \sqrt{2} is a common factor

    \sqrt{ab} = \sqrt{a}\sqrt{b} \: , \: a,b \geq 0

    5\sqrt{6} = 5\sqrt{2}\sqrt{3}

    2\sqrt{10} = 2\sqrt{2}\sqrt{5}

    <br />
5\sqrt{2}\sqrt{3} + 2\sqrt{2}\sqrt{5} = \sqrt{2}(5\sqrt{3}+2\sqrt{5})

    But that seems pointless, better to leave it in the form you have it in unless it helps enormously to have the square root of 2 ready for further operation
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Subtracting radicands.
    Posted in the Algebra Forum
    Replies: 2
    Last Post: September 12th 2009, 01:23 PM
  2. Radicals with different Radicands
    Posted in the Algebra Forum
    Replies: 11
    Last Post: August 30th 2009, 08:33 PM
  3. Radicals with different Radicands
    Posted in the Algebra Forum
    Replies: 3
    Last Post: August 30th 2009, 07:49 PM
  4. Unlike Fractions with + in the Denominator
    Posted in the Algebra Forum
    Replies: 3
    Last Post: December 1st 2008, 03:17 AM
  5. related rate unlike others
    Posted in the Calculus Forum
    Replies: 4
    Last Post: October 29th 2008, 10:23 AM

Search Tags


/mathhelpforum @mathhelpforum