Write the prime factorization of the radicand. Apply the product property of square roots. Write the radicand as a product, forming as many perfect square roots as possible. Simplify. What is the simplified form of 3 StartRoot 135 EndRoot? StartRoot 15 EndRoot 3 StartRoot 5 (3) EndRoot = 3 StartRoot 15 EndRoot (3 3) StartRoot 5 (3) EndRoot = 6 StartRoot 15 EndRoot 3 (3) StartRoot 5 (3) EndRoot = 9 StartRoot 15 EndRoot.