Question 51141
You are probably talking about a cube root, fourth root, etc.  


For example, {{{ root(3,27) }}} is a cube root.  It means "what number can you raise to the third power and get 27?"  Of course, the answer is 3, because {{{3^3 = 27}}}.


As another example, {{{ root(4,16) }}} is a fourth root.  It means "what number can you raise to the fourth power and get 16?"  Of course, the answer is 2, because {{{2^4 = 16}}}.


I have a complete explanation of this as a Lesson Plan in algebra.com under "Square-cubic-other-roots." Also, see my own website by clicking on my tutor name "rapaljer" anywhere in algebra.com, then go to Basic Algebra, the look for "Samples from Basic Algebra: One Step at a Time", then Chapter 5, which is a complete explanation of radicals.


R^2 at SCC