The End is just around the corner! There are only a few opportunities left to impact your grade.

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The End is just around the corner! There are only a few opportunities left to impact your grade.

Retake your Lowest Unit Test Grade Reviews will be available online and in class by Friday Retakes will be in class on Tuesday 11/30 Review MUST be finished and turned in the day of retest 6 week, 12 week tests and daily grades are not eligible for retake

2.4 Solve Polynomial Inequalities

Interval Notation a b b a a b a b a a b b

Solve and graph on a number line.

Example 1: Solve x 3 – 3x 2 > 10x algebraically  Step 1: Rewrite as an equation, and put in standard form.  Step 2: Solve for x (we can factor)

Example 2 Cont’d: 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 Does NOT work WORKS Does NOT work (-2, 0) (5, ∞ )

You Try: Solve the inequality algebraically 1. -3x x 2 < - 8x

You Try: Solve the inequality algebraically 1. -3x x 2 < - 8x

2.4 Solve Polynomial Inequalities

Interval Notation a b b a a b a b a a b b

Example 1: Solve 2x 3 + x 2 – 6x < 0 by graphing.  Graph and find your zeros  x = -2, 0, 3/2 (-∞, -2] and [0, 3/2]

You Try: Solve the inequality using a graph 1. 2x 3 + 8x 2 > - 6x

Solve and graph on a number line.

Assignment Page 83 and 84 #1-17 odd on both