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Homework Help: I can't do this Simutaneous equation

  1. Apr 5, 2009 #1
    1.1 + 0 = 0.11 x + 0.3y
    5.5 + 0 = 0.55x^2 + .15y^2

    it's got squares and i'm confused on what to do with them
  2. jcsd
  3. Apr 5, 2009 #2


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    Staff: Mentor

    Do you know how to solve quadratic equation?
  4. Apr 5, 2009 #3
    of course i do!

    -b +- sqrt((b^2-4ac)/2a)

    can you please just show me how to solve it, instead of giving hints to solve it,
    i'm good at maths, this is just a thing i came up from my physics question and no one's helping and i needed to sort out the maths
    and i can't do it, i'll be able to once you show me how and the awnser please XD
    Last edited by a moderator: Apr 24, 2017
  5. Apr 5, 2009 #4


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    Homework Helper
    Gold Member

    Do you know how to solve a linear equation? :biggrin:
  6. Apr 5, 2009 #5
    look it's really early and this is a physics question that've summed down into a simutaneous equation, i haven't done simutaneous equations since high school lol...

    but if you're trying to say make it equal eachother i.e

    1.1 - 0.11x - 0.3y = 5.5 - .55x^2 - .15y^2

    i still have no idea how to solve it,

    i'm pretty sure it's a simutaneous equation and would appreciate if someone could show me how to solve it lololololol

    thanks, 2am now
  7. Apr 5, 2009 #6

    Doc Al

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