how can you tell if radicials are like radicals?
Radicals are expressions that involve square roots, cube roots, etc. While radicals can differ in their radicands (the number inside the radical symbol), they are considered like radicals if they have the same index (the number outside the radical symbol) and the same radicand.
To determine if radicals are like radicals, compare the index and radicand of the radicals. If both the index and radicand are the same, then the radicals are considered like radicals. If either the index or radicand is different, then the radicals are not like radicals.