How do you simplify sqrt7 (9 sqrt5 - 3 sqrt 7)? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer Alan P. Feb 8, 2016 9sqrt(35)-21 Explanation: sqt(7)(9sqrt(5)-3sqrt(7)) color(white)("XXX")=(9sqrt(5)*sqrt(7))-(3sqrt(7)*sqrt(7)) color(white)("XXX")=9sqrt(35)-(3*7) color(white)("XXX")=9sqrt(35)-21 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 1492 views around the world You can reuse this answer Creative Commons License