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cbrusoe Group Title

121+x^2=225 what does x equal?

  • 2 years ago
  • 2 years ago

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  1. JamesWolf Group Title
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    so you want to get the x on its own. try subtracting 121 from both sides first

    • 2 years ago
  2. cbrusoe Group Title
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    104

    • 2 years ago
  3. JamesWolf Group Title
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    yeah, x^2 = 104

    • 2 years ago
  4. JamesWolf Group Title
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    now you need to get rid of the ^2

    • 2 years ago
  5. cbrusoe Group Title
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    mmk how do i do that?

    • 2 years ago
  6. mickey4691 Group Title
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    what is the opposite of ^2?

    • 2 years ago
  7. JamesWolf Group Title
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    okay well whats the opposite of squaring something?

    • 2 years ago
  8. mickey4691 Group Title
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    remember it's \[\pm \sqrt{104}\]

    • 2 years ago
  9. cbrusoe Group Title
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    ooh nevermind went blank i would square root it making x = 10.2 right

    • 2 years ago
  10. CheetahBooks1 Group Title
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    121+x^2=225 -121 -121 x^2=104 square root x square root 104 X=10.2 approximately

    • 2 years ago
  11. JamesWolf Group Title
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    yeah awesome :)

    • 2 years ago
  12. cbrusoe Group Title
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    =) thank-you guys!!

    • 2 years ago
  13. mickey4691 Group Title
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    but it's gonna be a positive or negative 10.2

    • 2 years ago
  14. CheetahBooks1 Group Title
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    Aww man! she got it! oh well, congratulations! That's how you would show your work.

    • 2 years ago
  15. cbrusoe Group Title
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    positive right...

    • 2 years ago
  16. cbrusoe Group Title
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    lol thanks =)

    • 2 years ago
  17. CheetahBooks1 Group Title
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    It can actually be positive and negative!

    • 2 years ago
  18. JamesWolf Group Title
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    could be either, but i doubt your teacher will care at this stage

    • 2 years ago
  19. mickey4691 Group Title
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    it can be positive and negative check it wit the calculator yu shud use positive for now

    • 2 years ago
  20. cbrusoe Group Title
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    haha yeahh i got it right =) thanks again all of you

    • 2 years ago
  21. CheetahBooks1 Group Title
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    You are welcome!

    • 2 years ago
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