SOLUTION: 3√125 - 2√80

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Question 274584: 3√125 - 2√80
Answer by dabanfield(803) About Me  (Show Source):
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3√125 - 2√80
3*sqrt(5*25) - 2*sqrt(5*16) =
3*sqrt(5)*sqrt(25) - 2*sqrt(5)*sqrt(16) =
3*sqrt(5)*5 - 2*sqrt(5)*4 =
15*sqrt(5) - 8*sqrt(5) = 7*sqrt(5)