0:00 Introduction.

1:45 Complex Numbers and the Imaginary Unit.

5:37 Simplify SQRT(-100). 6:10 Simplify SQRT(-200).

6:50 Simplify SQRT(-150).

7:58 Simplify SQRT(-98).

8:46 Simplify SQRT(-16) times SQRT(-15).

10:12 Solve x^2 +81 = 0.

12:12 Simplify (2+3i) + (5+8i). 12:55 Simplify (8+3i) - (4-10i).

13:58 Simplify (5i)/(3+2i).

13:58 The use of the Conjugate.

17:12 Simplify (3+2i) times (7-5i).

18:49 Simplify (7-13i)/(2i).

19:58 Find the values of x and y that make the equation true. x+1+2yi = 3-6i.