Tutorial - Simplifying Expressions with Complex numbers ex 1, (8i)(4i)(-9i)

The video tutorial explains how to simplify complex expressions by using multiplication. It begins with a simple example of multiplying terms and then extends the concept to complex numbers involving imaginary units. The tutorial covers the properties of the imaginary unit 'i', including its powers, and demonstrates how to rewrite and calculate expressions involving 'i'. The final section concludes with a complete calculation, showing how to simplify a complex expression to a positive imaginary number.

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