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Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5? −5, one third , one half 5, − one third , one half 5, one third , − one half 5, one third , one half

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

State one method by which you can recognize a perfect square trinomial.