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Published byPedro Shilling Modified over 2 years ago

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Complex Numbers Any number in form a+bi, where a and b are real numbers and i is imaginary. What is an imaginary number?

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Definition of imaginary numbers:

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Simplify complex numbers Remember 28

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Answer: -i

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Try these problems: -15 i

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When adding or subtracting complex numbers, combine like terms.

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Try these on your own

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ANSWERS:

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Multiplying complex numbers. To multiply complex numbers, you use the same procedure as multiplying polynomials.

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Examples to do together:

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Lets do another example. FOIL Next

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Answer: Now try these: 21-i

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Next

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Answers:

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Conjugates In order to simplify a fractional complex number, use a conjugate. What is a conjugate?

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are said to be conjugates of each other.

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Lets do an example: Rationalize using the conjugate Next

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Reduce the fraction

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Lets do another example Next

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Try these problems.

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