ANSWERS: 4

When you look at that list of terms, what things do you see that are the same (like)? That's all it means. Look at the first one (5ab). Do you see anymore 5's? Do you see anymore a's? Do you see anymore b's? That's how you do it.

(5ab,4ab)(3b)(3a)? :0

Just find the ones that have the same variables. 5ab and 4ab are like terms because they both have "ab". 3b and 3a are not like terms because they have different variables.

Like terms consist of the same variable(s). So 5ab and 4ab both have 'ab'. So they are like terms. Now 3b and 3a are not like terms because they have different variables. Hope you get it.
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