Use the following function to answer parts a through c.

f(x)=x3+3x289x91

a. List all rational zeros that are possible according to the Rational Zero Theorem.

(write an integer or a simplified fraction. Use a comma to separate answers as needed. Type each answer onlyonce.)

b. Use synthetic division to test several possible rational zeros in order to identify one actual zero.

One rational zero of the given function is

(Simplify youranswer.)

c. Use the zero from part(b) to find all the zeros of the polynomial function.

The zeros of the function are

(Simplify your answer. Use a comma to separate answers as needed. write an integer or decimal rounded to three decimal places asneeded.)