Results 1 to 2 of 2

Math Help - Need help solving an equation.

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    62

    Need help solving an equation.

    I have no idea how to solve equations with modulus signs in. Do I take the modulus out and go through the equation with the four possibilities:

    Positive sign, negative sign
    Negative sign, negative sign
    Positive sign, positive sign
    Negative sign, positive sign?

    Help would be greatly appreciated!
    Attached Thumbnails Attached Thumbnails Need help solving an equation.-functions2.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    9
    Quote Originally Posted by bluebiro View Post
    I have no idea how to solve equations with modulus signs in. Do I take the modulus out and go through the equation with the four possibilities:

    Positive sign, negative sign
    Negative sign, negative sign
    Positive sign, positive sign
    Negative sign, positive sign?

    Help would be greatly appreciated!
    Let y=|x-3| then y^2 - 4y = 12 \implies y^2 - 4y - 12 = 0

    Now solve for y.
    And then you can solve for x.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. HELP on solving this equation for Q
    Posted in the Algebra Forum
    Replies: 6
    Last Post: September 19th 2010, 04:39 PM
  2. Solving an equation
    Posted in the Algebra Forum
    Replies: 2
    Last Post: September 30th 2009, 04:31 AM
  3. Need help solving this equation
    Posted in the Trigonometry Forum
    Replies: 0
    Last Post: May 28th 2009, 05:08 AM
  4. solving diff equation w/ bournoulli's equation
    Posted in the Calculus Forum
    Replies: 2
    Last Post: February 14th 2008, 06:06 PM
  5. solving an equation
    Posted in the Algebra Forum
    Replies: 3
    Last Post: August 30th 2007, 07:03 PM

Search Tags


/mathhelpforum @mathhelpforum