Question | Answer | Solution |
36. | ||
39. |
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42. | 5 |
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45. |
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48. |
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51. |
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54. |
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57. | i2 = -1, so -2i2 = 2; 4 - i + 8i - 2i2 = 6 + 7i. |
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66. |
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68a. |
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68b. |
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68c. |
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68d. |
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