SOLUTION: Help!! 4 sqrt 72 - sqrt 18

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Question 92020: Help!!
4 sqrt 72 - sqrt 18
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
%284sqrt%2872%29-sqrt%2818%29%29
%284sqrt%283%2A3%2A4%2A2%29-sqrt%282%2A3%2A3%29%29 [Factor the radicands if possible]
%284%2A3%2A2sqrt%282%29-3sqrt%282%29%29 [Find the square root wherever possible]
%2824sqrt%282%29-3sqrt%282%29%29 [Simplify]
%2821sqrt%282%29%29 [Combine like-terms]