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Home > INT3 > Chapter 9 > Lesson 9.2.2 > Problem 9-115

9-115.
  1. Use your answers to the previous problem to complete each part below. Homework Help ✎

    1. Factor x3 – 5x2 + 11x – 15.

    2. Determine the roots of P(x) = x3 – 5x2 + 11x – 15.

There are 2 factors. (x − 3) is one factor. Use long division to find the other factor.

Once the polynomial is factored, use the Zero Product Property to solve.

This is a 3rd degree polynomial function, so find 3 answers. One of the answers is x = 1 + 2i.