Complex Numbers: Operations — Engineering Board Exam Practice Questions

8 free engineering board exam reviewer questions on Complex Numbers: Operations (Advanced Engineering Mathematics), each with the correct answer and a worked solution.

1. Simplify: i2001
2. Simplify: i15+i18
3. Add: (3+5i)+(2-7i)
4. Multiply: (4+3i)(2-i)
5. Divide: 3+4i/1-2i
6. Find the absolute value (modulus) of 5-12i.
7. Find the complex conjugate of 6-8i, then multiply it by the original number.
8. Simplify: (2+3i)2