SOLUTION: Express the product of 3square root of 20(2 square root of 5 minus 7)

Algebra ->  Radicals -> SOLUTION: Express the product of 3square root of 20(2 square root of 5 minus 7)      Log On


   

Question 252584: Express the product of 3square root of 20(2 square root of 5 minus 7)
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
we have the original product as:
3%2Asqrt%2820%29%2A%282%2Asqrt%285%29+-+7%29
using distributive property, we get
6%2Asqrt%28100%29+-+21%2Asqrt%2820%29
which becomes
60+-+21%2A2%2Asqrt%285%29
60+-+42sqrt%285%29