anonymous
  • anonymous
121+x^2=225 what does x equal?
Algebra
schrodinger
  • schrodinger
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anonymous
  • anonymous
so you want to get the x on its own. try subtracting 121 from both sides first
anonymous
  • anonymous
104
anonymous
  • anonymous
yeah, x^2 = 104

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anonymous
  • anonymous
now you need to get rid of the ^2
anonymous
  • anonymous
mmk how do i do that?
anonymous
  • anonymous
what is the opposite of ^2?
anonymous
  • anonymous
okay well whats the opposite of squaring something?
anonymous
  • anonymous
remember it's \[\pm \sqrt{104}\]
anonymous
  • anonymous
ooh nevermind went blank i would square root it making x = 10.2 right
anonymous
  • anonymous
121+x^2=225 -121 -121 x^2=104 square root x square root 104 X=10.2 approximately
anonymous
  • anonymous
yeah awesome :)
anonymous
  • anonymous
=) thank-you guys!!
anonymous
  • anonymous
but it's gonna be a positive or negative 10.2
anonymous
  • anonymous
Aww man! she got it! oh well, congratulations! That's how you would show your work.
anonymous
  • anonymous
positive right...
anonymous
  • anonymous
lol thanks =)
anonymous
  • anonymous
It can actually be positive and negative!
anonymous
  • anonymous
could be either, but i doubt your teacher will care at this stage
anonymous
  • anonymous
it can be positive and negative check it wit the calculator yu shud use positive for now
anonymous
  • anonymous
haha yeahh i got it right =) thanks again all of you
anonymous
  • anonymous
You are welcome!

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