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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.
• 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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• 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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