Identify the pair(s) of like terms among the given options.
Like: 4xy, 8x2
Like: 4xy, 3yx
Unlike: 4xy, 8x2
Unlike: 3yx, 8x2
Like terms are terms that contain the same variables raised to the same power. Here, 3yx and 4xy are like terms, since the variables in both terms are x and y.
Identify the pair(s) of unlike terms among the given options.
Identify the mismatched purine-pyrimidine pair among the following options.