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Home > INT3 > Chapter 8 > Lesson 8.3.2 > Problem 8-119

8-119.
  1. Sketch the graph of each polynomial function below and identify all of the zeros. Homework Help ✎

    1. y = x3 + 1

    2. y = x3 – 8

These are both cubic functions, shifted vertically.

Each function has one x-intercept, which is a zero of the function. Divide the polynomial by the associated factor to obtain a quadratic factor. Then use the Quadratic Formula to obtain the other two (complex) zeros.