## Roots in Mathematica

0

Example:

x = (-8)^(1/3)

Return:

2 (-1)^(1/3)

How simplifying?

I need an answer as x = -2

Thanks!

Question was closed 2015-11-04T05:13:28.847

$-1$ has three roots; Mathematica's choice (the "principal branch") happens to be complex. You'll want to use Surd[] for real-valued odd roots of negative numbers. See the linked thread for more details. – J. M.'s ennui – 2015-11-04T05:15:05.993

Excuse me! I read properly but not fluent in English to explain properly... – Dennis La Cotera – 2015-11-04T05:33:54.360