This is the 5761st most frequent Polish word.
wzięli
"Took" (past tense of "take").
The word 'wzięli' is in the past tense, masculine personal plural form of the verb 'wziąć' which means 'to take', indicating that a group of people (at least one male) performed the action of taking the books in the past.
Wzięli książki ze stołu.
They took the books from the table.
Here, 'wzięliście' is the second-person past tense masculine personal plural form of 'wziąć', asking if the addressed group took something into consideration.
Czy wzięliście pod uwagę wyjaśnienia?
Did you take into consideration the explanations?
In this sentence, 'wzięli' is used in the sense of 'to take part', metaphorically implying the involvement of a group of individuals in an event, specifically a contest.