Find a polynomial f (x) of degree 3 that has the following zeros.

• -9, 1, 0
Leave your answer in factored form.

1 answer

To construct a polynomial \( f(x) \) of degree 3 with the given zeros, we can use the fact that if \( r \) is a zero of a polynomial, then \( (x - r) \) is a factor of that polynomial.

The zeros you provided are -9, 1, and 0. This means the corresponding factors of the polynomial are:

  • For the zero -9: \( (x + 9) \)
  • For the zero 1: \( (x - 1) \)
  • For the zero 0: \( (x - 0) = x \)

Putting these factors together, we get:

\[ f(x) = (x + 9)(x - 1)(x) \]

Thus, the polynomial \( f(x) \) in factored form is:

\[ f(x) = x(x + 9)(x - 1) \]