Results 1 to 5 of 5

Math Help - College Factoring Simple yes or no will help alot!

  1. #1
    Newbie
    Joined
    Mar 2008
    Posts
    7

    Wink College Factoring Simple yes or no will help alot!

    Hey guys and Gals.

    I have two factoring problems here and they don't seem to be factor-able. I might be wrong. A simple yes or no will do just fine. ^_^

    1. 4x^2+20x+25-y^2

    2. 36x^2+12xy+y^2-16w^2

    Thanks for your simple yes or no answers- ^_^
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    Quote Originally Posted by cpuboye11 View Post
    Hey guys and Gals.

    I have two factoring problems here and they don't seem to be factor-able. I might be wrong. A simple yes or no will do just fine. ^_^

    1. 4x^2+20x+25-y^2

    2. 36x^2+12xy+y^2-16w^2

    Thanks for your simple yes or no answers- ^_^
    yes both are factorable

    1.  (2x+y+5)(2x-y+5)

    2 (6x+y-4w)(6x+y+4w)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Mar 2008
    Posts
    7
    Quote Originally Posted by 11rdc11 View Post
    yes both are factorable

    1.  (2x+y+5)(2x-y+5)

    2 (6x+y-4w)(6x+y+4w)

    hey thanks a lot. I didn't need you to do that !!
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Senior Member
    Joined
    Jul 2009
    From
    Melbourne
    Posts
    274
    Thanks
    4
    Quote Originally Posted by 11rdc11 View Post
    yes both are factorable

    1.  (2x+y+5)(2x-y+5)

    2 (6x+y-4w)(6x+y+4w)
    may I ask how you did the second one?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,693
    Thanks
    1466
    Quote Originally Posted by cpuboye11 View Post
    Hey guys and Gals.

    I have two factoring problems here and they don't seem to be factor-able. I might be wrong. A simple yes or no will do just fine. ^_^

    1. 4x^2+20x+25-y^2
    4x^2+ 20x+ 25 is a "perfect square"- it is (2x+ 5)^2.
    So 4x^2+ 20x+ 25- y^2 is a "difference of squares"- it is (2x+5)^2- y^2 and so can be factored as a "sum and difference": (2x+ 5+ y)(2x+ 5- y)

    2. 36x^2+12xy+y^2-16w^2
    Same idea: (6x+ y)^2- 16w^2= (6x+y- 4w)(6x+y+ 4w)

    Thanks for your simple yes or no answers- ^_^
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. factoring basic college algebra problem
    Posted in the Algebra Forum
    Replies: 1
    Last Post: September 22nd 2010, 05:12 PM
  2. Replies: 5
    Last Post: December 9th 2009, 06:00 AM
  3. Replies: 2
    Last Post: January 18th 2009, 05:17 PM
  4. I need alot of help
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 7th 2008, 10:13 PM
  5. simple college algebra
    Posted in the Algebra Forum
    Replies: 5
    Last Post: June 6th 2008, 09:44 PM

Search Tags


/mathhelpforum @mathhelpforum