Question

Simplify the following radical expression
square root of 20 x square root of 5

Answer 1

list 20 into its factors, which is 4 and 5. Now the square root of 4 is 2, so write that outside the radical symbol, for the inside, write five because that's all it's left. Answer is two times the square root of five.

Answer 2

Reference from https://answers.yahoo.com/question/index?qid=20091117161019AAlvcxe

Hope this helps

Answer 3

Thank you very much! This should help me tremendously.