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Home > INT3 > Chapter 8 > Lesson 8.3.2 > Problem 8-112

8-112.

Carlo is trying to factor the polynomial to determine all of its zeros. He discovers one factor by making a guess and dividing the polynomial, so he has . Now he is trying to factor , so he tries dividing it by then by , and finally by , but none works without a remainder. Then Teo comes by and says, “You should look at the graph.” Homework Help ✎

  1. How does the graph help?

    It shows that is a double root, so is a repeated factor.

  2. Complete the problem.

    Divide by

    Now use the Quadratic Formula to solve for .

    step 1 square

    step 2 square

    step 3 square

    step 4 square

graph