9. ${\displaystyle \frac{2}{x+1}},x\ne -1$

10. ${\displaystyle \frac{3}{x-2}},x\ne 2$

11. ${\displaystyle \frac{3}{x-1}},x\ne -1,x\ne 1$

12. ${\displaystyle \frac{5}{2+x}},x\ne -2,x\ne 2$

13. $-{\displaystyle \frac{2}{x+3}},x\ne -3,x\ne 3$

14. ${\displaystyle \frac{3}{x-5}},x\ne -5,x\ne 5$

15. $-1,x\ne {\displaystyle \frac{1}{2}}$

16. $-1,x\ne {\displaystyle \frac{2}{5}}$

17. ${\displaystyle \frac{x-3}{4}},x\ne 3$

18. ${\displaystyle \frac{x-5}{3}},x\ne 5$

19. ${\displaystyle \frac{7x}{x+1}},x\ne -1$

20. ${\displaystyle \frac{4x}{x+3}},x\ne -3$

21. ${\displaystyle \frac{x-10}{x+7}},x\ne -7,x\ne 1$

22. ${\displaystyle \frac{x+5}{x-4}},x\ne 3,x\ne 4$

23. ${\displaystyle \frac{x+2}{x-2}},x\ne -{\displaystyle \frac{1}{3}},x\ne 0,x\ne 2$

24. ${\displaystyle \frac{1}{x-4}},x\ne -{\displaystyle \frac{1}{3}},x\ne 0,x\ne 4$

25. 1

26. ${\displaystyle \frac{1}{3}}$

27. ${\displaystyle \frac{x+3}{2(x-3)}}$

28. ${\displaystyle \frac{(5x+3)(x+2)}{4}}$

29. ${\displaystyle \frac{x-1}{x}}$

30. 5

31. ${\displaystyle \frac{x-1}{x+3}}$

32. ${\displaystyle \frac{(x-2)(x+4)}{(x+5)(x+1)}}$

33. $-1$

34. $-1$

35. ${\displaystyle \frac{3}{8}}$

36. ${\displaystyle \frac{9}{80}}$

37. ${\displaystyle \frac{5x(x-3)}{2}}$

38. ${\displaystyle \frac{{(x+1)}^2}{21}}$

39. ${\displaystyle \frac{3(x+3)}{x+4}}$

40. ${\displaystyle \frac{x+4}{x+1}}$

41. ${\displaystyle \frac{x-3}{x^2-2x+4}}$

42. ${\displaystyle \frac{x-1}{x-4}}$

43. ${\displaystyle \frac{x+3}{5}}$

44. ${\displaystyle \frac{7-x}{4}}$

45. ${\displaystyle \frac{x+4}{2x+1}}$

46. ${\displaystyle \frac{3x}{7x-3}}$

47. ${\displaystyle \frac{1}{x+1}}$

48. ${\displaystyle \frac{x+9}{3x+2}}$

49. ${\displaystyle \frac{2(x-2)}{x-3}}$

50. $-{\displaystyle \frac{x-4}{x-1}}$

51. ${\displaystyle \frac{7x}{x^2+1}}$

52. ${\displaystyle \frac{2x}{{(x-1)}^2}}$

53. ${\displaystyle \frac{4x}{x-3}}$

54. ${\displaystyle \frac{3x}{{(x+5)}^2}}$

55. ${\displaystyle \frac{1}{x+2}}$

56. ${\displaystyle \frac{5}{x+1}}$

57. ${\displaystyle \frac{2(1-3x)}{(2x-1)(2x+1)}}$

58. ${\displaystyle \frac{1-8x}{(4x-1)(4x+1)}}$

59. $-{\displaystyle \frac{x^3+2x^2+4x-8}{x(x-2)(x+2)}}$

60. ${\displaystyle \frac{2x^3+6x^2-x-1}{x(x-1)(x+1)}}$

61. $12(x-2)$

62. $21(1+3x)$

63. $(2x-1){(2x+1)}^2$

64. $(3x+1){(3x-1)}^2$

65. $(x-1)(x+1)(x+2)$

66. $(x-3)(x+3)(x+2)$

67. $(x-1)(x-4)(x+2)$

68. $(x-3)(x+1)(x+2)$

69. ${\displaystyle \frac{7x+15}{(x-3)(x+3)}}$

70. ${\displaystyle \frac{x(3x+4)}{(x-1)(x+1)}}$

71. ${\displaystyle \frac{x(4-x)}{(x-2)(x+2)}}$

72. $-{\displaystyle \frac{2x^2+6x+5}{(x-4)(x+4)}}$

73. ${\displaystyle \frac{2x+3}{(x-2)(x+5)}}$

74. ${\displaystyle \frac{2x^2+x+5}{(x-2){(x+1)}^2}}$

75. ${\displaystyle \frac{2(9x^2-5x+1)}{(3x+1){(3x-1)}^2}}$

76. ${\displaystyle \frac{2(4x^2+3x+1)}{(2x-1){(2x+1)}^2}}$

77. ${\displaystyle \frac{9(x-3)}{(x+4)(x+5)(x-5)}}$

78. $-{\displaystyle \frac{7}{(x+4)(x-3)}}$

79. ${\displaystyle \frac{2x-3}{(2+x)(2-x)}}$

80. ${\displaystyle \frac{5(x+8)}{(5-x)(5+x)}}$

81. ${\displaystyle \frac{16a^2}{(x-5a)(x-3a)}}$

82. ${\displaystyle \frac{5x^2}{(2x-a)(3x+a)}}$

83. $-{\displaystyle \frac{h}{x(x+h)}}$

84. $-{\displaystyle \frac{h(2x+h)}{x^2{(x+h)}^2}}$

85. ${\displaystyle \frac{2x}{3}}$

86. $-3x^2$

87. ${\displaystyle \frac{1}{x-1}}$

88. ${\displaystyle \frac{1}{(1-x)(1+x)}}$

89. ${\displaystyle \frac{1-x}{1+x}}$

90. ${\displaystyle \frac{2(x-1)}{x+2}}$

91. $-x$

92. $-x$

93. ${\displaystyle \frac{x(2x-1)}{2x+1}}$

94. ${\displaystyle \frac{x(2x+3)}{2x+1}}$

95. $-{\displaystyle \frac{1}{x(x+h)}}$

96. $-{\displaystyle \frac{2x+h}{x^2{(x+h)}^2}}$

97. ${\displaystyle \frac{x}{a}},x\ne -a$

98. ${\displaystyle \frac{2x}{x^2+a^2}}$