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. 10-174 HW eTool (Desmos). Homework Help ✎
If (−5, 0) is an intercept, then (x + 5) is a factor. Divide the given polynomial by (x + 5), and then use the Quadratic Formula or factor to find the other intercepts.
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