Results 1 to 4 of 4

Math Help - Equivalent terms

  1. #1
    Newbie
    Joined
    Jun 2009
    Posts
    19

    Equivalent terms

    For some strange reason I don't know how these equal each other;

    u^2/ u^2-4 = 1+ 4/ u^2-4

    help?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Mar 2008
    Posts
    182
    Quote Originally Posted by klooless View Post
    For some strange reason I don't know how these equal each other;

    u^2/ u^2-4 = 1+ 4/ u^2-4

    help?
    \frac{u^2}{u^2-4} = 1 + \frac{4}{u^2 - 4}

    Multiply both sides by {u^2 - 4}
    Gives
    u^2 = u^2 - 4 + 4

    Your brackets may have caused some confusion, perhaps...
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jun 2009
    Posts
    19
    Most likely, yes. but what step is taken to get from the left to the right side?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,628
    Thanks
    430
    \frac{u^2}{u^2-4} = \frac{u^2-4+4}{u^2-4} = \frac{u^2-4}{u^2-4} + \frac{4}{u^2-4} = 1 + \frac{4}{u^2-4}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. How are these two equivalent?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: November 24th 2010, 01:28 PM
  2. How are these two equivalent
    Posted in the Algebra Forum
    Replies: 3
    Last Post: November 24th 2010, 05:56 AM
  3. Equivalent
    Posted in the Calculus Forum
    Replies: 0
    Last Post: July 13th 2010, 12:56 PM
  4. Replies: 7
    Last Post: November 27th 2009, 06:35 PM
  5. Replies: 2
    Last Post: November 19th 2008, 04:07 PM

Search Tags


/mathhelpforum @mathhelpforum