Results 1 to 3 of 3

Math Help - factorizing

  1. #1
    Super Member
    Joined
    Oct 2007
    From
    Santiago
    Posts
    517

    factorizing

    Working on this expression.. Can anyone check if this is correct. thank you!!


    factorize  9x^2-4y^2 + 6x + 4y

    = (3x+2y)(3x-2y)+(6x+4y)

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

  2. #2
    Member
    Joined
    Aug 2007
    Posts
    144
    Yes it is right. You can always check by multiplying out the brackets.

    Maybe a neater solution would be;

     <br />
3x(3x+2)+4y(1-y)<br />
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Jun 2008
    Posts
    792
    Quote Originally Posted by jvignacio View Post
    Working on this expression.. Can anyone check if this is correct. thank you!!


    factorize  9x^2-4y^2 + 6x + 4y

    = (3x+2y)(3x-2y)+(6x+4y)

    = (3x+2y)(3x-2y)+2(3x+2y)
    You're correct, except you can still pull (3x+2y) as a common factor so that you get:

    (3x+2y)(3x-2y+2)

    One way to check your solution if it's correct or not is to expand and see for yourself.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Factorizing
    Posted in the Statistics Forum
    Replies: 4
    Last Post: March 27th 2011, 03:27 PM
  2. Factorizing
    Posted in the Algebra Forum
    Replies: 1
    Last Post: January 29th 2009, 02:51 AM
  3. Factorizing
    Posted in the Algebra Forum
    Replies: 1
    Last Post: January 24th 2009, 03:36 AM
  4. factorizing
    Posted in the Algebra Forum
    Replies: 3
    Last Post: January 11th 2009, 12:29 AM
  5. factorizing
    Posted in the Algebra Forum
    Replies: 3
    Last Post: November 3rd 2008, 07:33 PM

Search Tags


/mathhelpforum @mathhelpforum