How do you simplify sqrt18+15sqrt2√18+15√2? Algebra Radicals and Geometry Connections Addition and Subtraction of Radicals 1 Answer Aisha M. May 5, 2018 18sqrt(2)18√2 Explanation: 15sqrt(2)15√2 is already simplified, but to simplify sqrt(18)√18 , we need to figure out its factors. the factors of 1818 are 3, 3, and 23,3,and2 sqrt(18)√18 simplified is 3sqrt(2)3√2 since 3 sqrt(2)3√2 and 15sqrt(2)15√2 both have the number 22 in the root you can add these two radicals to get 18sqrt(2)18√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\sqrt{3}+2\sqrt{12}4√3+2√12? How do you add 3""^3sqrt(2)+5""^3sqrt(16)33√2+53√16? How do you subtract \sqrt{8x^3}-4x\sqrt{98x}√8x3−4x√98x? How do you combine the radical \sqrt{6}-\sqrt{27}+2\sqrt{54}+3\sqrt{48}√6−√27+2√54+3√48? How do you simplify ""^3sqrt{\frac{16x^5}{135y^4}}3√16x5135y4? What is sqrt(50)-sqrt(18)√50−√18? How do you add 3sqrt2+4sqrt23√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 1737 views around the world You can reuse this answer Creative Commons License