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 1494 views around the world You can reuse this answer Creative Commons License