Answer:
No.1 : To add or subtract radicals, the indices and what is inside the radical (called the radicand) must be exactly the same. If the indices and radicands are the same, then add or subtract the terms in front of each like radical. If the indices or radicands are not the same, then you can not add or subtract the radicals
No.2: You multiply radical expressions that contain variables in the same manner. As long as the roots of the radical expressions are the same, you can use the Product Raised to a Power Rule to multiply and simplify. Look at the two examples that follow.
No.3: Remove common factors in the fraction. Rewrite the radicand as a product using the largest perfect square factor. Rewrite the radical as the product of two radicals. Simplify.
