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Calculators How do I calculate roots with the 15c

  1. May 12, 2012 #1
    I'm trying to calculate the cube root of -8, for example, so I type in these buttons:

    8
    CHS (change sign)
    Enter
    3
    1/x
    y^x

    But it gives me an error. What is the correct way to go about doing this?
     
  2. jcsd
  3. May 12, 2012 #2

    I like Serena

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    Homework Helper

    You won't be able to calculate ##\sqrt[3]{-8}##.
    If you want it, calculate ##-\sqrt[3]{8}##.

    Calculators can't take roots of negative numbers.
     
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