# R_4 - Chapter R Review R.4 1 4 7 8 9 11 12 13 15 17 19 21...

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Chapter R 19 Review R.4 Polynomials 1. 4, 3 2. x 4 - 16 3. x 3 - 8 4. False 5. True 6. False 7. 2 x 3 Monomial; Variable: x ; Coefficient: 2; Degree: 3 8. - 4 x 2 Monomial; Variable: x ; Coefficient: –4; Degree: 2 9. 8 x Not a monomial. 10. - 2 x - 3 = - 2 x 3 Not a monomial. 11. - 2 xy 2 Monomial; Variable: x , y ; Coefficient: –2; Degree: 3 12. 5 x 2 y 3 Monomial; Variable: x , y ; Coefficient: 5; Degree: 5 13. 8 x y Not a monomial 14. - 2 x 2 y 3 Not a monomial 15. x 2 + y 2 Not a monomial. 16. 3 x 2 + 4 Not a monomial. 17. 3 x 2 - 5 Polynomial; Degree: 2 18. 1 - 4 x Polynomial; Degree: 1 19. 5 Polynomial; Degree: 0 20. π Polynomial; Degree: 0 21. 3 x 2 - 5 x Not a polynomial. 22. 3 x + 2 Not a polynomial. 23. 2 y 3 - 2 Polynomial; Degree: 3 24. 10 z 2 + z Polynomial; Degree: 2 25. x 2 + 5 x 3 - 1 Not a polynomial. 26. 3 x 3 + 2 x - 1 x 2 + x + 1 Not a polynomial. 27. x 2 + 4 x + 5 ( 29 + 3 x - 3 ( 29 = x 2 + 4 x + 3 x ( 29 + 5 - 3 ( 29 = x 2 + 7 x + 2 28. x 3 + 3 x 2 + 2 ( 29 + x 2 - 4 x + 4 ( 29 = x 3 + 3 x 2 + x 2 ( 29 + - 4 x ( 29 + 2 + 4 ( 29 = x 3 + 4 x 2 - 4 x + 6

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Chapter R Review 20 29. x 3 - 2 x 2 + 5 x + 10 ( 29 - 2 x 2 - 4 x + 3 ( 29 = x 3 - 2 x 2 + 5 x + 10 - 2 x 2 + 4 x - 3 = x 3 + ( - 2 x 2 - 2 x 2 ) + ( 5 x + 4 x ) + (10 - 3) = x 3 - 4 x 2 + 9 x + 7 30. x 2 - 3 x - 4 ( 29 - x 3 - 3 x 2 + x + 5 ( 29 = x 2 - 3 x - 4 - x 3 + 3 x 2 - x - 5 = - x 3 + ( x 2 + 3 x 2 ) + ( - 3 x - x ) + ( - 4 - 5) = - x 3 + 4 x 2 - 4 x - 9 31. 6 x 5 + x 3 + x ( 29 + 5 x 4 - x 3 + 3 x 2 ( 29 = 6 x 5 + 5 x 4 + 3 x 2 + x 32. 10 x 5 - 8 x 2 ( 29 + 3 x 3 - 2 x 2 + 6 ( 29 = 10 x 5 + 3 x 3 - 10 x 2 + 6 33. x 2 - 3 x + 1 ( 29 + 2 3 x 2 + x - 4 ( 29 = x 2 - 3 x + 1 + 6 x 2 + 2 x - 8 = 7 x 2 - x - 7 34. - 2 x 2 + x + 1 ( 29 + - 5 x
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