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# Complex Numbers

## a + bi, the sum of a real and an imaginary number.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Complex Numbers

Definition of complex numbers and the complex number system, basic manipulation of complex numbers.
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## Defining Complex Numbers

This lesson covers the powers of i, adding, and subtracting complex numbers.
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## Defining Complex Numbers

This lesson covers the powers of i, adding, and subtracting complex numbers.
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## Arithmetic with Complex Numbers

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## Complex Numbers

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## Complex Numbers

Definition of complex numbers and the complex number system, basic manipulation of complex numbers
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## Complex Numbers

Definition of complex numbers and the complex number system, basic manipulation of complex numbers
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## Defining Complex Numbers

by EPISD Algebra 2 Team //at grade
This lesson covers the powers of i, adding, and subtracting complex numbers.
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## SLT 5 Define a complex number and determine its relationship to the real number system.

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## Defining Complex Numbers

This lesson covers the powers of i, adding, and subtracting complex numbers.
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## Defining Complex Numbers

This lesson covers the powers of i, adding, and subtracting complex numbers.
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## Extension: Defining Complex Numbers

This lesson covers the powers of i, adding, and subtracting complex numbers.
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• PLIX

## Complex: Imaginary Number Spinner

Complex Numbers Interactive
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• PLIX

## Complex Values

Complex Numbers Interactive
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• Video

## Introduction to i and Imaginary Numbers

Introduces the topic of imaginary numbers.
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• Video

## Complex Numbers

Dives into imaginary numbers deeper and talks about complex number.
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• Video

## Complex Numbers (part 1)

Introduces complex numbers and how to add, subtract, and multiply complex numbers.
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• Video

## Writing Complex Numbers in Standard Form - Overview

by CK-12 //basic
Overview
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• Video

## Writing Complex Numbers in Standard Form - Example 1

by CK-12 //basic
Basic
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• Video

## Writing Complex Numbers in Standard Form - Example 2

by CK-12 //basic
Multiplying or squaring imaginary numbers
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• 1
• Real World Application

## Getting Lost in a Pineapple

by CK-12 //basic
Learn about the Mandelbrot Set of fractals that is created using complex numbers.
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• Study Guide

## Imaginary and Complex Numbers

Add, subtract, multiply, and divide complex numbers, as well as identify complex roots of quadratic functions.
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• Study Guide

## Imaginary and Complex Numbers

Add, subtract, multiply, and divide complex numbers, as well as identify complex roots of quadratic functions.
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• Flashcards

## Defining Complex Numbers

by Kyle Bardman //basic
These flashcards will help you to better understand Algebra II with Trigonometry Concepts.
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