Results 1 to 2 of 2

Math Help - solving equation

  1. #1
    Junior Member
    Joined
    Jul 2009
    Posts
    36

    Post solving equation

    Hi, can anyone help me with this:

    y^2=2x+3
    x^2+y^2=4

    I tried substituting the first line in the second one :

    x^2+2x+3=4 => x^2+2x+3-4 = 0 => x^2+2x-1=0

    And solve it as a quadratic equation, where x = -1+-sqrt(2)

    Am i missing something because, the rezult is not so convinsing.

    Thanks a lot. I appreciate it.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Oct 2009
    Posts
    5,417
    Thanks
    718
    Your answer (at least for x) is correct. The more you practice these problems (including those whose answers are not "nice" numbers like integers), the more you'll become comfortable with them.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Solving another equation
    Posted in the Algebra Forum
    Replies: 1
    Last Post: January 18th 2010, 03:09 PM
  2. Solving equation
    Posted in the Algebra Forum
    Replies: 8
    Last Post: January 11th 2010, 01:14 PM
  3. solving the equation
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 20th 2009, 04:20 AM
  4. solving equation
    Posted in the Algebra Forum
    Replies: 4
    Last Post: April 16th 2009, 01:51 AM
  5. solving diff equation w/ bournoulli's equation
    Posted in the Calculus Forum
    Replies: 2
    Last Post: February 14th 2008, 06:06 PM

Search Tags


/mathhelpforum @mathhelpforum