How do you simplify 3√8+3√2? Algebra Radicals and Geometry Connections Addition and Subtraction of Radicals 1 Answer sjc Dec 18, 2016 9√2 Explanation: rewrite the roots as the same square root where possible 3√8+3√2 =3√4×2+3√2 =3×2√2+3√2 =6√2+3√2 =9√2 Answer link Related questions How do you add and subtract radicals? How is a radical considered a "like term"? How do you simplify 4√3+2√12? How do you add 33√2+53√16? How do you subtract √8x3−4x√98x? How do you combine the radical √6−√27+2√54+3√48? How do you simplify 3√16x5135y4? What is √50−√18? How do you add 3√2+4√2? What is the square root of 50 + the square root of 8? See all questions in Addition and Subtraction of Radicals Impact of this question 1874 views around the world You can reuse this answer Creative Commons License