Question

Why do you need to find zero in a polynomial function????

Answer 1

Use the Rational Zero Theorem to list all possible rational zeros of the function.

Use synthetic division to evaluate a given possible zero by synthetically dividing the candidate into the polynomial.

Repeat step two using the quotient found with synthetic division.

Find the zeros of the quadratic function.

Explanation:

Hope it helps

Answer 2

the "zeroes" of a polynomial function give you your answers for the x-values. finding the zero means finding the solutions, or answers that you plug in for x.