| 100234 | Complex Numbers · Exercise 39 | Medium | |
| 100236 | Complex Numbers · Exercise 41 | Medium | |
| 100239 | Complex Numbers · Exercise 45 | Medium | |
| 100241 | Complex Numbers · Exercise 47 | Medium | |
| 100243 | Complex Numbers · Exercise 49 | Medium | |
| 100245 | Complex Numbers · Exercise 51 | Medium | |
| 100247 | Complex Numbers · Exercise 53 | Medium | |
| 100249 | Complex Numbers · Exercise 55 | Medium | |
| 100251 | Complex Numbers · Exercise 57 | Medium | |
| 100253 | Complex Numbers · Exercise 59 | Medium | |
| 100255 | Complex Numbers · Exercise 61 | Medium | |
| 100257 | Complex Numbers · Exercise 63 | Medium | |
| 100259 | Complex Numbers · Exercise 65 | Medium | |
| 107132 | Complex Numbers · Exercise 6 | Medium | |
| 107134 | Complex Numbers · Exercise 8 | Medium | |
| 107136 | Complex Numbers · Exercise 10 | Medium | |
| 107137 | Complex Numbers · Exercise 44 | Medium | |
| 107139 | Complex Numbers · Exercise 46 | Medium | |
| 125828 | Use the Complex Number System · Exercise 69 | Medium | |
| 125829 | Use the Complex Number System · Exercise 70 | Medium | |
| 125830 | Use the Complex Number System · Exercise 71 | Medium | |
| 125831 | Use the Complex Number System · Exercise 72 | Medium | |
| 125833 | Use the Complex Number System · Review Exercise 74 | Medium | |
| 125836 | Use the Complex Number System · Review Exercise 78 | Medium | |
| 125838 | Use the Complex Number System · Review Exercise 88 | Medium | |
| 125839 | Use the Complex Number System · Review Exercise 92 | Medium | |
| 125841 | Use the Complex Number System · Review Exercise 108 | Medium | |
| 125843 | Use the Complex Number System · Review Exercise 158 | Medium | |
| 125845 | Use the Complex Number System · Review Exercise 160 | Medium | |
| 125847 | Use the Complex Number System · Exercise 172 | Medium | |
| 125849 | Use the Complex Number System · Exercise 174 | Medium | |
| 125851 | Use the Complex Number System · Exercise 176 | Medium | |
| 125853 | Use the Complex Number System · Exercise 178 | Medium | |
| 125855 | Use the Complex Number System · Exercise 180 | Medium | |
| 125857 | Use the Complex Number System · Exercise 182 | Medium | |
| 125859 | Use the Complex Number System · Exercise 184 | Medium | |
| 125861 | Use the Complex Number System · Exercise 186 | Medium | |
| 125863 | Use the Complex Number System · Exercise 188 | Medium | |
| 125865 | Use the Complex Number System · Exercise 190 | Medium | |
| 125867 | Use the Complex Number System · Exercise 192 | Medium | |
| 125869 | Use the Complex Number System · Exercise 194 | Medium | |
| 125870 | Use the Complex Number System · Exercise 195 | Medium | |