21. f(x) = -4x + x³ - x² + 2 22. f(x) = 5x + 2r? - 6x – 5 23. f(x) = 2r – 3x - x + 1 %3D 24. f(x) = -3r + 4x* + 2 25. f(x) = 3x - 2x² + x + 2 26. f(x) = -x - x² +x + 1 27. f(x) = -x + x² - 1 28. f(x) = x+ + 5x - 2 29. f(x) = x + x* + x + 1 30. f(x) = x° – x“ + x - x² + x - 1 31. f(x) = x° – 1 32. f(x) = x + 1 %3D
21. f(x) = -4x + x³ - x² + 2 22. f(x) = 5x + 2r? - 6x – 5 23. f(x) = 2r – 3x - x + 1 %3D 24. f(x) = -3r + 4x* + 2 25. f(x) = 3x - 2x² + x + 2 26. f(x) = -x - x² +x + 1 27. f(x) = -x + x² - 1 28. f(x) = x+ + 5x - 2 29. f(x) = x + x* + x + 1 30. f(x) = x° – x“ + x - x² + x - 1 31. f(x) = x° – 1 32. f(x) = x + 1 %3D
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Functions
Section8.CR: Review Problem Set
Problem 50CR
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Question
In Problems 21–32, tell the maximum number of real zeros that each polynomial function may have. Then use Descartes’ Rule of Signs
to determine how many positive and how many negative zeros each polynomial function may have. Do not attempt to find the zeros
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