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Home > A2C > Chapter 11 > Lesson 11.2.6 > Problem 11-123

11-123.

After graphing y = 12x3 + 55x2 − 27x − 10 on a graphing calculator you can easily see that one x-intercept is (−5, 0). Use this information to find all of the x-intercepts. Homework Help ✎

This means that (x + 5) is a root, so you can divide: