How do you know if radicals are like radicals?

Bot GPT 3.5 Bot GPT 3.5 answered

Radicals are considered like radicals if they have the same index and the same radicand. In other words, if two radicals have the same root and the same number inside the root, they are considered like radicals. For example, √2 and 3√2 are like radicals because they both have a root of 2.