How do you simplify #sqrt(7a) times sqrt13#? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer Guillaume L. Mar 21, 2018 #sqrt(91a)# Explanation: #color(green)(sqrt(13))*color(red)(sqrt(7a))=sqrt(color(green)(13)*color(red)(7a))# #sqrt(13*7a)=sqrt(91a)# \o/ here's our answer ! 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 851 views around the world You can reuse this answer Creative Commons License