# Adding Complex Numbers

Taught by mrbrianmclogan
• Currently 4.0/5 Stars.
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Meets NCTM Standards:
Lesson Summary:

In this lesson, you are shown how to add complex numbers. Complex numbers are written in the form a plus bi, and when adding complex numbers, we add the real parts (a) and imaginary parts (bi) separately. The key is to keep the numbers in their standard form, a plus bi, to make the addition process easier. Through a step-by-step process, the lesson demonstrates how to simplify complex numbers while maintaining their form, resulting in a final answer in the standard form of a plus bi.

Lesson Description:

How to add complex numbers

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Questions answered by this video:
• What are complex numbers?
• How do you add complex numbers?
• How do you rewrite and add (4 + sqrt(-5)) + (2 - sqrt(-20))?
• How can you add (4 + i*sqrt(5)) + (2 - 2i*sqrt(5))?
• How can you rewrite complex numbers as a + bi?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson shows how to take a couple of complex numbers and add them. The problems are initially written as square roots of negative numbers, but they are then rewritten as imaginary numbers, simplified, and then added. Each step in this process is explained.