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How do I calculate roots with the 15c

 
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May12-12, 11:38 AM   #1
 

How do I calculate roots with the 15c


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?
 
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May12-12, 01:16 PM   #2
 
Recognitions:
Homework Helper Homework Help
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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