Question 40802
You have already completed 90% of the problem (good job!).  Now you just need to further simplify the radical by factoring 20.
3(radical 5 X 4)/5
Simplify the terms under the radical by finding the square root of 4:
(radical 4 = 2)
Multiply by 2, simplify and you have the correct answer:
3 X 2 (radical 5)/5
6(radical 5)/5