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Adding Square roots Help

  1. Sep 7, 2014 #1
    How do I solve, 1:

    (√3*√3*√3)/(√3+√3+√3)? How do I simplify it? I'm confused on how to shorten √x+√x+√x, I just don't get it.

    Also if:

    √700 = 26.46, then how is √70000 = 264.6? Shouldn't it be 2646?
     
  2. jcsd
  3. Sep 7, 2014 #2
    √3*√3 = ?
     
  4. Sep 7, 2014 #3
    √9, but I don't understand hpw to simplify when it's +...
     
  5. Sep 7, 2014 #4

    BvU

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    :smile: orange + orange + orange = 3 oranges.
    Similarly √3+√3+√3 = 3√3

    Voko would have liked it a lot better if you would have typed a number, not an expression... How much is √9 ?
     
  6. Sep 7, 2014 #5

    Nugatory

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    Staff: Mentor

    Try writing 70000 as 700*100, see where that gets you.
     
  7. Sep 7, 2014 #6

    Ray Vickson

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    Really? Go back and think about the DEFINITION of √3, or √n for any number n. In other words, when we speak of the number r = √n, what is the fundamental relationship between r and n?
     
  8. Sep 7, 2014 #7

    PeroK

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    I think that quite a few people never learn or forget that:

    [tex]\overbrace{x + x + \ \dots + x}^{n \ times} = nx[/tex]
     
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