1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Quadratic equation solving

  1. Feb 15, 2009 #1
    1. Suppose y = bx^2 +cx + a
    a.) in terms of a, b, and c, what values of x make y=0?

    b.) if a=3.1, b= -2.2 and c=-4.3 evaluate those solutions to 3 significant digits:

    2. Relevant equations

    3. Im not really sure how to solve for what the question is asking for in part a, and for part b do I just plug those values into a quadratic formula for an answer? Any help is appreciated
  2. jcsd
  3. Feb 15, 2009 #2
    Re: y=bx^2+cx+a

    for part 'b', you would want to use the quadratic formula.
  4. Feb 15, 2009 #3


    User Avatar
    Gold Member

    Re: y=bx^2+cx+a

    Part a is really very similar to part b, it is just a much more general case, which applies to any constants a, b and c. It is basically saying that for any given constants, what are the solutions to the equation:

    bx^2 +cx + a = 0
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook