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Help me with quadratic equations

  1. Nov 19, 2007 #1
    i learned this a few weeks ago and now i have a project due tomorrow and i want to make sure in doing this right before i make useless graphs...

    like: (x-1)^2+3

    or (x+2)^2

    i cant remember how to exponent that ****...
  2. jcsd
  3. Nov 19, 2007 #2

    Was it the question that you were asking that was cencored? Or are you asking how to graph the functions?
    Last edited: Nov 19, 2007
  4. Nov 19, 2007 #3
    how did you do that
  5. Nov 19, 2007 #4
    im asking..

    how to (x+5)squared
  6. Nov 19, 2007 #5
    Think of it this way.

    12^2 =(10+2)*(10+2)=10*10+10*2+2*10+2*2=100+20+20+4=144
    (x+a)^2=(x+a)*(x+a) =x*x+x*a+x*a+a*a=x^2+2xa+a^2

    Are you familiear with FOIL?

    (x+5)^2 (a=5)=x^2+2ax+a^2=x^2+2*5*x+5^2=x^2+10x+25
  7. Nov 19, 2007 #6
    no.. i get it..

    i tried to find my notes but organization isnt really my thing..
    but i got it now, thanks to you! :D

    mucho grassy ass
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