27 = 9x3Factor 27, and break it up into a perfect square times a non-square.
Here is one of many sites that teach the topic: https://www.purplemath.com/modules/radicals.htm
Then write back and show us your work, so we can interact with it.
27 = 9x3
square root of 9 x 3 = 3 x square root of 3
4 x 3 x square root of 3
12 x square root of 3