Tutorial - Simplifying Expressions with Complex numbers ex 4, (1 - 9i)(1 - 4i)(4 - 3i)

The video tutorial explains how to multiply three binomials involving imaginary numbers. It begins with an introduction to the concept and proceeds to apply the FOIL method to the first two binomials. The tutorial then demonstrates how to simplify expressions using imaginary numbers, particularly focusing on the property that I squared equals negative one. Finally, the video shows the multiplication of the resulting binomial with the third binomial, using the FOIL method again, and simplifies the final expression.

Can you describe the process of applying the FOIL method as mentioned by the teacher?

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What final expression does the teacher arrive at after simplifying the complex numbers?

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