Results 1 to 3 of 3

Math Help - Factorising

  1. #1
    Newbie
    Joined
    May 2008
    Posts
    1

    Factorising

    Can someone please help me.

    36x^2z-6xyz-6y^2z?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Behold, the power of SARDINES!
    TheEmptySet's Avatar
    Joined
    Feb 2008
    From
    Yuma, AZ, USA
    Posts
    3,764
    Thanks
    78
    Quote Originally Posted by mikey18 View Post
    Can someone please help me.

    36x^2z-6xyz-6y^2z?

    I think you mean this

    36x^2z-6xyz-6y^2z

    Now come the "trick"
    lets add zero to the equation 0=(12xyz-12xyz)

    36x^2z-6xyz-6y^2z+0 \to 36x^2z-6xyz-6y^2z+12xyz-12xyz

    Now rewriting as

    36x^2z-18xyz+12xyz-6y^2z \iff 18xz(2x-y)+6yz(2x-y)

    (2x-y)(18xz+6yz)=6(2x-y)(3xz+yz)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member

    Joined
    May 2006
    From
    Lexington, MA (USA)
    Posts
    11,857
    Thanks
    739
    Hello, mikey18!

    Factor: . 36x^2z-6xyz-6y^2z

    Factor out the common factor 6z\!:\quad 6z(6x^2 - xy - y^2)

    Then factor the trinomial: . 6z(2x - y )(3x + y )

    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. factorising x^2 - x + 4
    Posted in the Algebra Forum
    Replies: 2
    Last Post: December 17th 2011, 05:23 AM
  2. Help with factorising
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 10th 2009, 01:35 PM
  3. Factorising 2
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 11th 2009, 07:28 AM
  4. factorising
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 27th 2009, 11:03 AM
  5. Factorising .
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: February 15th 2009, 07:00 AM

Search Tags


/mathhelpforum @mathhelpforum