Use the information in the table to answer each question.IntervalValue of f(x)(−∞, −2)Positive(−2, 1)Negative(1, 3)Negative(3, ∞)Positive(a)What are the three real zeros of the polynomial function f? (Enter your answers as a comma-separated list.)x =

Answer :

Note that the zeros of a polynomial function are the x-values for which the graph of the function unction is