SOLUTION: Combine the radicals below. Show your steps. 1. 4√11+8√11 2. √80-√5 thank you so much

Algebra ->  Trigonometry-basics -> SOLUTION: Combine the radicals below. Show your steps. 1. 4√11+8√11 2. √80-√5 thank you so much      Log On


   

Question 478903: Combine the radicals below. Show your steps.
1. 4√11+8√11
2. √80-√5

thank you so much
Answer by cleomenius(959) About Me  (Show Source):
You can put this solution on YOUR website!
In 1, the radicands are the same sqrt%2811%29, so we can add them and obtain 12sqrt%2811%29.
In number 2, we can evaluate sqrt%2880%29 as sqrt%2816%29*sqrt%285%29, or 4 sqrt%285%29.
4sqrt%285%29 - sqrt%285%29 = 3sqrt%285%29
Cleomenius.