Question

How to simplify radicals into simplest radical form?

Answer 1

An example should help :-

Simplify sqrt 20:-

sqrt 20  = sqrt (4 * 5) = sqrt 4 * sqrt5  = 2 sqrt5

cube root of 54  = cube root 27 * cube root 2  = 3 cube root 2

The rule is to factor the number and look for perfect squares or  cubes, etc.