9. Yes; x2+2x+1
10. No
11. No
12. Yes; x7+3x5+3x4−2x+1
13. No
14. No
15. Yes
16. Yes
17. Degree: 1; terms: 7x, 3
18. Degree: 2; terms: −3x2, 7
19. Degree: 4; terms: −x4,x2, 2x,−9
20. Degree: 7; terms: 2x3, 9x7, x,−21
21. 2x2−3x−1
22. 2x3−x2−2x−2
23. x3−x2+5x−8
24. −2x3−3x2+9x−6
25. −10x4−6x3+12x2−7x+17
26. 13x2−8x+14
27. −24x2−14x−14
28. −2x2−30x+2
29. 2y3+y2−2y−1
30. 6y2+6y+1
31. 12x2+18x
32. 21x2−28x
33. x3+3x2+4x+2
34. 2x3−13x2+16x−5
35. 3x3−5x2+5x−2
36. 2x3−5x2+5x+4
37. x2+3x+2
38. x2+5x+6
39. 9x2+9x+2
40. 2x2+11x+15
41. −4x2−7x+15
42. −2x2+11x−5
43. 6x2−7x+2
44. 5x2−8x+3
45. 4x2+4ax−15a2
46. 5x2+23ax−10a2
47. 4x+4
48. −6x+9
49. 16x2+8x+1
50. 9x2+12x+4
51. x2+32x+916
52. x2+45x+425
53. 9x2−24xy+16y2
54. 4x2+20xy+25y2
55. x4+4x2+4
56. 9−6x2+x4
57. 14x2+4x2+2
58. 9y2+19y2−2
59. x3+6x2+12x+8
60. 8x3−12x2+6x−1
61. 9x2+27x+27
62. −6x2+12x−8
63. x3+6x2y+12xy2+8y3
64. 8x3+36x2y+54xy2+27y3
65. 25−4x2
66. 9−16x2
67. 4x2−9y2
68. 25x2−4y2
69. x2−1x2
70. y24−4y2
71. x4−9
72. x6−4
73. 2x3−9x2+19x−15
74. x3−6x2+5x+6
75. y3+1
76. y3+64
77. x3−216
78. x3−1
79. 3x2+11xy+10y2
80. 14x2+11xy+2y2
81. 6x2+11xy−7y2
82. 2x2−xy−15y2
83. x4−2x2y2+y4
84. 16x4−8x2y2+y4
85. x3−3x2y+4y3
86. x3+3x2y−4y3
87. x4−4x3y+16xy3−16y4
88. 16x4+16x3y−4xy3−y4
89. 10
90. 13
91.
7
47
92.
6
34
93. 72
94. 58