CPM Homework Banner

Home > A2C > Chapter 11 > Lesson 11.2.4 > Problem 11-93

11-93.
  1. Using your answers to the previous problem: Homework Help ✎

    1. Factor f(x) = x3 − 5x2 + 11x − 15.

    2. Solve f(x) = 0.

Use a generic rectangle to see if x − 3 is a factor.

x2 − 2x + 5

(x − 3)(x2 − 2x + 5)

Use the factors to solve for x.

(x − 3)(x2 − 2x + 5)

x = 3

Use the quadratic formula to solve the other factor.

x = 1 ± 2i

x = {3, 1 ± 2i}