Complex Numbers 4
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Lesson Description:
Several examples are provided, showing how to multiply, and square complex numbers in standard form. Also, complex conjugates are defined and the product of complex conjugates is shown.
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Questions answered by this video:
- How do you square complex numbers?
- How do you multiply two complex numbers with both real and imaginary parts?
- What is (2 + 3i)^2?
- What is (4 + 3i)(4 - 3i)?
- How do you multiply (6 - 5i)(6 + 5i)?
- What does (3 + 5i)(3 - 5i) equal?
- How do you multiply (7 + i)(7 - i)?
- How do you square (7 + i)?
- What are complex conjugates?
- What happens when you multiply two complex conjugates?
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Staff Review
This lesson has a lot of practice problems showing how to multiply complex numbers that have both a real and imaginary part to them, so they look and act just like binomial expressions, but i^2 = -1. Many different example problems are shown and solved in this lesson. FOIL is shown and explained for squaring complex numbers, multiplying complex numbers, and multiplying complex conjugates.
