Question

what is the best way to learn how to add/subtract and multiply radicals?

Answer 1

Good question-I dont know how to answer it.

Answer 2

If you want to add and subtract think of them as terms and remember that only like terms can be added or subtracted.

Answer 3

http://www.purplemath.com/modules/radicals.htm

Answer 4

sometimes you can simplify them by writing them wityh fractional indicies:

eg sqrt(2) +cbrt(2) = 2^1/2 +2^1/3= 2^5/6