Multiplying Complex Numbers with One Term

The video tutorial explains the concept of complex numbers, focusing on their real and imaginary components. It covers the multiplication of simple terms and extends this knowledge to multiplying complex numbers with one term, either real or imaginary. The tutorial provides examples and a multiple-choice question to reinforce understanding, emphasizing that i is not a variable but a number whose square is -1.

How can you simplify the expression negative 15i squared?

Identify which of the following is not a real number based on the multiplication of complex numbers.