Module 6: Lesson 5
Are You Ready?
- This inequality can be solved graphically. Graph the function y = x2 − 2x − 8 and see where the function is greater than zero.
From the graph, the function y = x2 − 2x − 8 is greater than zero when x < −2 or x > 4.
So, for the inequality x2 − 2x − 8 > 0, x < −2 or x > 4.
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