UNIT 8 Roots
8.1 Definition.
The nth root of a number x is a number r which, when raised to the power of n, equals x.
The third root of eight:
![\sqrt[3]8=2](http://wiki.wolnepodreczniki.pl/images/math/2/6/8/268cbbda2dd912ea7e14c0527757ad39.png)
because: 23 = 8
8.1 Definition.
The nth root of a number x is a number r which, when raised to the power of n, equals x.
The third root of eight:
because: 23 = 8