Results 1 to 3 of 3

Thread: Mixed Factors

  1. #1
    Newbie
    Joined
    Jan 2009
    From
    Sydney
    Posts
    13

    Mixed Factors

    I dont know how to do mixed factors what so ever, there is only one example in my text book but I dont know how to do the others.

    These are some problems:

    3p^2 - 3p - 36=

    4a^3b + 8a^2b^2 - 2ab^2 =

    *Note ^means: power of
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2008
    From
    West Malaysia
    Posts
    1,261
    Thanks
    1
    I assume that you want to factorise them .

    (1)$\displaystyle 4a^3b+8a^2b^2-2ab^2$

    $\displaystyle =2ab(2a^2+4ab-b)$

    (2) $\displaystyle 3p^2-3p-36$

    $\displaystyle =3(p^2-p-12)$

    $\displaystyle =3(p-4)(p+3)$
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Like a stone-audioslave ADARSH's Avatar
    Joined
    Aug 2008
    From
    India
    Posts
    726
    Thanks
    2
    Quote Originally Posted by Needhelpatmaths View Post
    I dont know how to do mixed factors what so ever, there is only one example in my text book but I dont know how to do the others.

    These are some problems:

    3p^2 - 3p - 36=


    4a^3b + 8a^2b^2 - 2ab^2 =

    *Note ^means: power of
    $\displaystyle 3(p^2-p-12) $


    $\displaystyle

    = 3(p^2+3p-4p-12)
    $

    $\displaystyle = 3 x(px(p+3) - 4x(p+3))$

    $\displaystyle =3x(p-4)x(p+3)$
    -----------------------------------------------------
    Check this one again

    4a^3b + 8a^2b^2 - 2ab^2

    because it stops where Mathaddict did it
    Last edited by ADARSH; Feb 10th 2009 at 10:05 PM. Reason: saw other one
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: Dec 7th 2009, 10:42 AM
  2. some mixed problems...
    Posted in the Calculus Forum
    Replies: 3
    Last Post: May 5th 2009, 12:04 PM
  3. Factors of 2310 and Factors of 1365
    Posted in the Algebra Forum
    Replies: 1
    Last Post: Oct 7th 2008, 06:56 PM
  4. Mixed Bag
    Posted in the Number Theory Forum
    Replies: 2
    Last Post: Feb 25th 2008, 08:57 PM
  5. mixed numbers
    Posted in the Algebra Forum
    Replies: 2
    Last Post: Mar 12th 2007, 06:32 PM

Search Tags


/mathhelpforum @mathhelpforum