Multiplying Complex Numbers

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Taught by mrbrianmclogan
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Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we learn how to multiply complex numbers that involve radicals and imaginary numbers. The first step is to factor out the negative and treat it as an imaginary number. We then simplify the radicals and multiply the numbers and i's. Remembering that i squared is equal to negative one, we arrive at our final answer. This lesson is a great tool for those who want to learn how to simplify and multiply with imaginary numbers in a clear and concise manner.

Lesson Description:

Multiplying radicals and imaginary numbers

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Questions answered by this video:
  • √-10.√-2 =
  • √-12.√-2 =