Tutorial - Simplifying Expressions with Complex numbers ex 5, -5(1 + 2i) + 3i(3 - 4i)

The video tutorial explains how to simplify a complex mathematical expression using the distributive property. It begins with the problem statement and proceeds to apply the distributive property to eliminate parentheses. The tutorial then demonstrates the step-by-step simplification of the expression, including handling complex numbers and rewriting terms. Finally, it concludes with writing the solution in standard complex form.

How do you rewrite -12 I squared as a positive number?

What is the final result of the expression after simplification?