9.
11.
13.
15.
17.
19.
21.
23.
25.
27. No rational zeros
35. Number of positive zeros: 0 or 2; number of negative zeros: 1
37. Number of positive zeros: 0 or 2; number of negative zeros: 1
39. Number of positive zeros: 1 or 3; number of negative zeros: 0 or 2
41. Number of positive zeros: 1 or 3; number of negative zeros: 1
43. Number of positive zeros: 0; number of negative zeros: 0
45. Number of positive zeros: 0; number of negative zeros: 0
47. Number of positive zeros: 1; number of negative zeros: 0
49. Upper bound:
51. Upper bound: 1; lower bound:
53. Upper bound: 31; lower bound:
55. Upper bound: 4 lower bound:
57.
59.
61.
63.
65.
67.
69.
71.
73.
75.