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Complex Numbers Section 2.1

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Objectives Rewrite the square root of a negative number as a complex number. Write the complex conjugate of a complex number. Add, subtract, multiply, and divide two complex numbers. Solve a quadratic equation with complex solutions.

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Vocabulary complex number complex conjugate

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Rewrite the following square root so that there is no longer a negative sign under the square root symbol.

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Evaluate the expression

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Multiply the following two numbers together.

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Find the complex conjugate of each of the following:

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Multiply the following two numbers together.

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Evaluate the expression

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Solve the equation:

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