Results 1 to 2 of 2

Math Help - how to factor out?

  1. #1
    Member
    Joined
    Sep 2009
    Posts
    129

    how to factor out?

    r^3-r^2-r-1 = 0

    From given equation, how to solve for r? please show me step by step.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,130
    Thanks
    1012
    Quote Originally Posted by zpwnchen View Post
    r^3-r^2-r-1 = 0

    From given equation, how to solve for r? please show me step by step.
    as written, the cubic will not factor ... the single real root is irrational. A decimal approximation can be found using technology or you can use this ...

    Cubic Formula -- from Wolfram MathWorld
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 0
    Last Post: July 19th 2011, 12:45 PM
  2. factor analysis , extract second factor loading
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: June 1st 2011, 06:17 AM
  3. factor analysis , extract second factor loading
    Posted in the Differential Geometry Forum
    Replies: 0
    Last Post: May 30th 2011, 06:29 AM
  4. Factor 3x^2 +2x -6
    Posted in the Algebra Forum
    Replies: 8
    Last Post: October 11th 2009, 11:12 AM
  5. How do i factor this?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: September 18th 2008, 03:45 PM

Search Tags


/mathhelpforum @mathhelpforum