Results 1 to 2 of 2

Math Help - help with simultaneous equations

  1. #1
    Newbie
    Joined
    Oct 2006
    Posts
    4

    help with simultaneous equations

    Having problems with this one - and other questions like it. Any general advice would be better than the answer, although the answer would be good too !

    KX^2 +8x + 5 = 0

    Find the value of K for which the equation has real routes.

    TNXS

    Becca.
    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 becca999 View Post
    Having problems with this one - and other questions like it. Any general advice would be better than the answer, although the answer would be good too !

    KX^2 +8x + 5 = 0

    Find the value of K for which the equation has real routes.

    TNXS

    Becca.
    The discrimant is non-negative.
    Thus,
    64-20k\geq 0
    Thus,
    20k\leq 64
    Thus,
    k\leq 3.2
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Simultaneous Equations 4 variables, 4 equations
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: December 7th 2011, 04:06 PM
  2. Simultaneous equations.
    Posted in the Algebra Forum
    Replies: 2
    Last Post: September 16th 2011, 05:09 PM
  3. Simultaneous log equations
    Posted in the Algebra Forum
    Replies: 6
    Last Post: March 28th 2010, 06:52 AM
  4. Replies: 3
    Last Post: February 27th 2009, 07:05 PM
  5. simultaneous equations
    Posted in the Algebra Forum
    Replies: 4
    Last Post: February 5th 2009, 09:20 PM

Search Tags


/mathhelpforum @mathhelpforum