Results 1 to 3 of 3

Math Help - Simplify and multiply this equation

  1. #1
    Member
    Joined
    Jun 2009
    Posts
    82

    Simplify and multiply this equation

    I can solve this through substitution since it's multiple choice ( X/(X-1), but how is it simplified?

    (( 9x^2-4) /( 3x^2-5x+2)) * ( (9x^4-6x^3+4x^2)/ 27x^4+8x)
    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
    11
    Awards
    1
    Quote Originally Posted by fcabanski View Post
    I can solve this through substitution since it's multiple choice ( X/(X-1), but how is it simplified?

    (( 9x^2-4) /( 3x^2-5x+2)) * ( (9x^4-6x^3+4x^2)/ 27x^4+8x)
    Hi fcabanski,

    \frac{9x^2-4}{3x^2-5x+2}\cdot \frac{9x^4-6x^3+4x^2}{27x^4+8x}

    Let's factor the thing.

    \frac{(3x-2)(3x+2)}{(3x-2)(x-1)}\cdot \frac{x^2(9x^2-6x+4)}{x(27x^3+8)}

    \frac{(3x-2)(3x+2)}{(3x-2)(x-1)}\cdot \frac{x^2(9x^2-6x+4)}{x(3x+2)(9x^2-6x+4)}

    How's this for a start?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Jun 2009
    Posts
    82
    I got that far but made a mistake when I factored the denominator of the second term. Thanks for the help.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Simplify the below equation
    Posted in the Algebra Forum
    Replies: 3
    Last Post: February 19th 2011, 08:23 AM
  2. How would you simplify this equation?
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: August 12th 2010, 12:26 AM
  3. multiply and simplify
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 20th 2010, 06:13 PM
  4. Simplify this equation.
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: October 22nd 2007, 02:30 PM
  5. Simplify the equation
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: September 9th 2005, 11:13 AM

Search Tags


/mathhelpforum @mathhelpforum