Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Help me with quadratic equations