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The End is just around the corner!
There are only a few opportunities left to impact your grade.
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Retake your Lowest Unit Test Grade
Reviews will be available online and in class by Friday Retakes will be in class on Tuesday 11/29 Review MUST be finished and turned in the day of retest 6 week, 12 week tests and daily grades are not eligible for retake
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2.4 Solve Polynomial Inequalities
Algebraically
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Interval Notation Bounded a a b b a b a b Unbounded a a b b
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Solve and graph on a number line.
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Example 1: Solve x3 – 3x2 > 10x algebraically
Step 1: Rewrite as an equation, and put in standard form. Step 2: Solve for x (we can factor)
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Example 2 Cont’d: (5, ∞) (-2, 0)
Plotting our found x-values will help us find our intervals. This breaks our number line into 4 intervals. Test an x-value in each interval to see if it satisfies the inequality (5, ∞) (-2, 0)
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You Try: Solve the inequality algebraically -3x3 + 10x2 < - 8x
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You Try: Solve the inequality algebraically -3x3 + 10x2 < - 8x
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HOMEWORK Page 83 1 – 9 all
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