Question

If 3 is the index, and there is no radicand, and inside of that radical is another radical with ten being the radicand, how could the result be 6 as the index with ten being the radicand? I thought you multiply the outer index with the inner one. In that case you would get 3, not 6.
bobpursley
the inner radical has an understood index of two (square root). 3x2 makes an index of 6.