How do you multiply (√a+√b)(√a−√b)? Algebra Radicals and Geometry Connections Multiplication and Division of Radicals 1 Answer seph Oct 25, 2014 You can treat it like Difference of Two Squares (a+b)(a−b)=a2−b2 (2√a+2√b)(2√a−2√b) ⇒2√a2−2√b2 ⇒a−b 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 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)? How do you simplify (√7+√5)4+(√7−√5)4? See all questions in Multiplication and Division of Radicals Impact of this question 3183 views around the world You can reuse this answer Creative Commons License