nth
Root
The number that must be multiplied times itself n times
to equal a given value. The nth root of x is written or .
For example, since
2^{5 } = 32.
Notes:
When n = 2 an nth root is called a square
root. Also,
if n is even and x is negative, then is
nonreal.
See
also
Root rules, radical, radicand
