9. $8+3i$

11. $-1-6i$

13. $-5-5i$

15. $15+6i$

17. $-8+12i$

19. $-3+15i$

21. $20+8i$

23. $3+11i$

25. 13

27. $24+7i$

29. $-141-24\sqrt{3i}$

31. $26-2i$

33. $\overline{z}=2+3i,z\overline{z}=13$

35. $\overline{z}={\displaystyle \frac{1}{2}}+2i,z\overline{z}={\displaystyle \frac{17}{4}}$

37. $\overline{z}=\sqrt{2}+3i,z\overline{z}=11$

39. 5i

41. $-{\displaystyle \frac{1}{2}}+{\displaystyle \frac{1}{2}}i$

43. $1+2i$

45. ${\displaystyle \frac{5}{2}}+{\displaystyle \frac{1}{2}}i$

47. ${\displaystyle \frac{43}{65}}-{\displaystyle \frac{6}{65}}i$

49. 2

51. $-{\displaystyle \frac{19}{13}}+{\displaystyle \frac{4}{13}}i$

53. $\{-2i,2i\}$

55. $\{1-i,1+i\}$

57. $\{5-i\sqrt{3},5+i\sqrt{3}\}$

59. $\left\{{\displaystyle \frac{4}{7}}-{\displaystyle \frac{\sqrt{5}}{7}}i,{\displaystyle \frac{4}{7}}+{\displaystyle \frac{\sqrt{5}}{7}}i\right\}$

61. $\left\{-{\displaystyle \frac{5}{3}}i,{\displaystyle \frac{5}{3}}i\right\}$