1. Section 1.4 Complex Numbers

2. The Imaginary Unit i

6. Example
Express as a multiple of i:

7. Operations with Complex Numbers

9. Example
Perform the indicated operation:

11. Example
Perform the indicated operation:

12. Complex Conjugates and Division

14. Using complex conjugates to divide complex numbers

15. Example
Divide and express the result in standard form:

16. Example
Divide and express the result in standard form:

17. Roots of Negative Numbers

20. Example
Perform the indicated operations and write the result in standard form:

21. Example
Perform the indicated operations and write the result in standard form:

22. Example
Perform the indicated operations and write the result in standard form:

23. Find the product.
(a)
(b)
(c)
(d)

24. Perform the indicated operation.
(b)
(c)
(d)