How do you simplify root3(18)*root3(15)? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer marfre Feb 15, 2017 3root(3)10 Explanation: Same type radicals can be combined: root(3)18 root(3)15 = root(3)(18 (15)) = root(3)270 = root(3)( 27 (10)) = 3root(3)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 1810 views around the world You can reuse this answer Creative Commons License