How do you simplify -4sqrt15*-sqrt3? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer Nityananda Jun 3, 2017 12sqrt5 Explanation: Given, -4sqrt15* -sqrt3 = (-xx-)4sqrt(3*5)*sqrt3 rArr +4sqrt3*4sqrt5*sqrt3 rArr 4sqrt3sqrt3*sqrt5 rArr 4*3^(1/2)3^(1/2)*sqrt5 rArr 4*3^(1/2+1/2)*sqrt5 rArr 4*3^(2/2)*sqrt5 rArr 4*3*sqrt5 = 12sqrt5 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 1166 views around the world You can reuse this answer Creative Commons License