Results 1 to 5 of 5

Math Help - Factor Polynomial

  1. #1
    Newbie
    Joined
    Jun 2012
    From
    asd
    Posts
    14

    Factor Polynomial

    x2y - 16y + 32 - 2x2

    what i came up with so far is

    y(x2 - 16) + 32 - 2x2
    y(x + 4)(x - 4) + 32 - 2x2


    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,549
    Thanks
    1418

    Re: Factor Polynomial

    Quote Originally Posted by PaperStSoap View Post
    x2y - 16y + 32 - 2x2

    what i came up with so far is

    y(x2 - 16) + 32 - 2x2
    y(x + 4)(x - 4) + 32 - 2x2


    \displaystyle \begin{align*} x^2y - 16y + 32 - 2x^2 &= x^2y - 2x^2 - 16y + 32 \\ &= x^2\left(y - 2\right) - 16\left(y - 2\right) \\ &= \left(y - 2\right)\left(x^2 - 16\right) \\ &= \left(y - 2\right)\left(x - 4\right)\left(x + 4\right) \end{align*}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jun 2012
    From
    asd
    Posts
    14

    Re: Factor Polynomial

    32 + 2x^2 = -2(-16 + x^2) = -2(x^2 - 16) = -2(x + 4)(x - 4)

    (y-2)(x+4)(x-4)

    is this right?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,549
    Thanks
    1418

    Re: Factor Polynomial

    Quote Originally Posted by PaperStSoap View Post
    32 + 2x^2 = -2(-16 + x^2) = -2(x^2 - 16) = -2(x + 4)(x - 4)

    (y-2)(x+4)(x-4)

    is this right?
    Didn't you read the post directly above this one?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Jun 2012
    From
    asd
    Posts
    14

    Re: Factor Polynomial

    i was actually typing that response before yours came up.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Factor the polynomial
    Posted in the Algebra Forum
    Replies: 7
    Last Post: January 21st 2011, 03:17 AM
  2. Factor the Polynomial
    Posted in the Algebra Forum
    Replies: 3
    Last Post: January 7th 2009, 06:42 PM
  3. polynomial factor
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: November 20th 2008, 04:49 PM
  4. [SOLVED] polynomial factor
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 20th 2008, 05:57 AM
  5. Factor the polynomial
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 23rd 2007, 04:38 AM

Search Tags


/mathhelpforum @mathhelpforum