How do you simplify sqrt 81/ sqrt 20? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer Elvan Burcu K. May 29, 2015 sqrt81 / sqrt20 = sqrt(9*9) /sqrt(2*2*5) = 9/(2sqrt5) = (9*sqrt5)/(2*sqrt5*sqrt5) = (9sqrt5)/(2*5) = (9 sqrt5) /10 Answer link Related questions How do you simplify \frac{2}{\sqrt{3}}? How do you multiply and divide radicals? How do you rationalize the denominator? What is Multiplication and Division of Radicals? How do you simplify 7/(""^3sqrt(5)? How do you multiply (sqrt(a) +sqrt(b))(sqrt(a)-sqrt(b))? How do you rationalize the denominator for \frac{2x}{\sqrt{5}x}? Do you always have to rationalize the denominator? How do you simplify sqrt(5)sqrt(15)? How do you simplify (7sqrt(13) + 2sqrt(6))(2sqrt(3)+3sqrt(6))? See all questions in Multiplication and Division of Radicals Impact of this question 1820 views around the world You can reuse this answer Creative Commons License