# Complex numbers

10 videos

6 skills

Let's start constructing numbers that have both a real and imaginary part. We'll call them complex. We can even plot them on the complex plane and use them to find the roots of ANY quadratic equation. The fun must not stop!

### Introduction to complex numbers

VIDEO
4:39 minutes

### The imaginary unit and complex numbers

PRACTICE PROBLEMS

### Plotting complex numbers on the complex plane

VIDEO
1:14 minutes

### Adding and subtracting complex numbers

PRACTICE PROBLEMS

### Multiplying complex numbers

PRACTICE PROBLEMS

### Dividing complex numbers

PRACTICE PROBLEMS

### Absolute value of a complex number

VIDEO
3:33 minutes

### Algebra II: Imaginary and complex numbers

VIDEO
9:55 minutes

21-26, mostly imaginary and complex numbers