Question 175544
What does the little number inside the "v" of the square root sign mean? 
I'm trying to help my son & don't remember ever learning that one. 
example:
suare root of -8 with a little "3" in the "v" 
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If there is no number, it's a square root.
If it's a 3, it's a cube root. 4 is the 4th root, etc.
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square root of -8 with a little "3" in the "v"
That's the cube root of -8, or
{{{-8^(1/3)}}}
The cube root of -8 = -2 because (-2)*(-2)*(-2) = -8 (3 of them multiplied)