Results 1 to 3 of 3

Math Help - Simplify

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    29

    Simplify

    Simplify the following:
    1 1
    --------------------------- + ------------------------------
    a2 + 7a + 12 a2 + a - 6
    ---------------------------------------- ----------------------------------------

    1 1
    --------------------------- + ------------------------------
    a2 + 2a - 8 a2 + 5a + 4
    Last edited by Mccoy31; November 23rd 2008 at 11:33 AM. Reason: wont let me post it correctly
    Follow Math Help Forum on Facebook and Google+

  2. #2
    A riddle wrapped in an enigma
    masters's Avatar
    Joined
    Jan 2008
    From
    Big Stone Gap, Virginia
    Posts
    2,551
    Thanks
    12
    Awards
    1
    Quote Originally Posted by Mccoy31 View Post
    Simplify the following:
    1 1
    --------------------------- + ------------------------------
    a2 + 7a + 12 a2 + a - 6
    --------------------------------------------------------------------------------
    1 1
    --------------------------- + ------------------------------
    a2 + 2a - 8 a2 + 5a + 4
    Hello McCoy,

    You probably need to wrap code tags around your symbols to preserve spacing, or use grouping symbols.

    \frac{1}{a^2+7a+12}+\frac{1}{a^2+a-6}=\frac{1}{(a+4)(a+3)}+\frac{1}{(a+3)(a-2)}

    Your LCD will be (a+4)(a+3)(a-2)

    Multiply this LCD times each term and you will get your new numerators.

    \frac{a-2}{(a+4)(a+3)(a-2)}+\frac{a+4}{(a+4)(a+3)(a-2)}=

    \frac{a-2+a+4}{(a+4)(a+3)(a-2)}=\frac{2a+2}{(a+4)(a+3)(a-2)}=\boxed{\frac{2(a+1)}{(a+4)(a+3)(a-2)}}

    You should be able to study this example and do the second one yourself. Good luck.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member euclid2's Avatar
    Joined
    May 2008
    From
    Ottawa, Canada
    Posts
    400
    Awards
    1
    Quote Originally Posted by Mccoy31 View Post
    Simplify the following:
    1 1
    --------------------------- + ------------------------------
    a2 + 7a + 12 a2 + a - 6
    ---------------------------------------- ----------------------------------------

    1 1
    --------------------------- + ------------------------------
    a2 + 2a - 8 a2 + 5a + 4
    2.
     \frac{1}{a^2+2a-8} + \frac{1}{a^2+5a+4}

     \frac{1}{(a+4)(a-2)} + \frac{1}{(a+4)(a-1)}


    Your lowest common denominator becomes  (a+4)(a-2)(a-1)

    can you finish?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. simplify #2
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: September 21st 2009, 03:37 PM
  2. Please simplify
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 27th 2009, 05:32 AM
  3. Can you simplify this further?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: April 23rd 2009, 07:45 AM
  4. Simplify
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 12th 2009, 06:06 AM

Search Tags


/mathhelpforum @mathhelpforum