How do you rationalize the denominator and simplify 12√13? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer 1s2s2p May 18, 2018 12√1313 Explanation: To rationalise the denominator for a√b you multiply by √b√b since this turns the √b on the bottom into a b, and is the same as multiply by 1. 12√13⋅√13√13=12√1313 Since 1213 cannot be simplified, we leave it as 12√1313 Answer link Related questions How do you simplify 2√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 73√5? How do you multiply (√a+√b)(√a−√b)? How do you rationalize the denominator for 2x√5x? Do you always have to rationalize the denominator? How do you simplify √5√15? How do you simplify (7√13+2√6)(2√3+3√6)? See all questions in Multiplication and Division of Radicals Impact of this question 1465 views around the world You can reuse this answer Creative Commons License