Results 1 to 4 of 4

Math Help - Factorising!!!

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    1

    Factorising!!!

    ok, this may seem a tad noobish but i'm in the ninth grade so i need help!

    Factorise the following:
    10p^2+30+p^3+3p

    This is the answer i came up with:

    p(10p+p^2+3)+30

    is that right or do i need help?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Aug 2009
    Posts
    29
    Quote Originally Posted by Awesome Smiley101 View Post
    ok, this may seem a tad noobish but i'm in the ninth grade so i need help!

    Factorise the following:
    10p^2+30+p^3+3p

    This is the answer i came up with:

    p(10p+p^2+3)+30

    is that right or do i need help?
    Seems alright to me, but it is usually written like

     p(p^2+10p+3)+30

    You can probably factorise further too!
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,404
    Thanks
    1293
    Quote Originally Posted by Awesome Smiley101 View Post
    ok, this may seem a tad noobish but i'm in the ninth grade so i need help!

    Factorise the following:
    10p^2+30+p^3+3p

    This is the answer i came up with:

    p(10p+p^2+3)+30

    is that right or do i need help?
    This is a factorising by grouping problem.

    Note that we can factorise each half of the expression

    10p^2 + 30 + p^3 + 3p = 10(p^2 + 3) + p(p^2 + 3).


    Can you see now there is a common factor of p^2 + 3?

     = (p^2 + 3)(10 + p).
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by Karl Harder View Post
    Seems alright to me, but it is usually written like

     p(p^2+10p+3)+30

    You can probably factorise further too!
    Sorry but this is not a factorised expression.
    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, 04:23 AM
  2. Help with factorising
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 10th 2009, 12:35 PM
  3. Factorising 2
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 11th 2009, 06:28 AM
  4. factorising
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 27th 2009, 10:03 AM
  5. Factorising .
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: February 15th 2009, 06:00 AM

Search Tags


/mathhelpforum @mathhelpforum