Results 1 to 2 of 2

Math Help - quadradic

  1. #1
    Junior Member
    Joined
    Sep 2008
    Posts
    56

    quadradic

    hi lol, i totally forgot my grd 9 stuff, how do u find x-intercept again!? with a quadratic formula like this y=-3x^2 +5x +4? do u just factor it and get the root? what do u do!! thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by lickman View Post
    hi lol, i totally forgot my grd 9 stuff, how do u find x-intercept again!? with a quadratic formula like this y=-3x^2 +5x +4? do u just factor it and get the root? what do u do!! thanks
    yes, you set y = 0 and solve for x. you can solve for x in many ways, by factorizing, the quadratic formula or completing the square.

    you cannot factorize here, so use the quadratic formula. it is easier than completing the square
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. quadradic
    Posted in the Algebra Forum
    Replies: 4
    Last Post: September 18th 2008, 06:43 PM
  2. fit to quadradic
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: May 10th 2008, 10:10 PM
  3. quadradic
    Posted in the Algebra Forum
    Replies: 4
    Last Post: March 31st 2008, 01:06 AM
  4. quadradic
    Posted in the Algebra Forum
    Replies: 1
    Last Post: March 29th 2008, 10:04 PM
  5. quadradic
    Posted in the Algebra Forum
    Replies: 1
    Last Post: January 15th 2008, 02:45 PM

Search Tags


/mathhelpforum @mathhelpforum