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College Algebra & Trigonometry, 2018a

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2.3. SOLUTION OF POLYNOMIAL INEQUALITIES BY GRAPHING 103<br />

Determine the interval(s) that satisfy each inequality.<br />

9) x 3 + x 2 − 5x +3≤ 0 10) x 3 − 7x +6> 0<br />

11) x 3 − 13x +12> 0 12) x 4 − 10x 2 +9< 0<br />

13) 6x 4 − 9x 2 − 4x +12≥ 0 14) x 4 − 5x 3 +20x − 16 > 0<br />

15) x 3 − 2x 2 − 7x +6≤ 0 16) x 4 − 6x 3 +2x 2 − 5x +2≤ 0<br />

17) 2x 4 +3x 3 − 2x 2 − 4x +2> 0 18) x 5 +5x 4 − 4x 3 +3x 2 − 2 ≤ 0

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