The video tutorial covers the multiplication of polynomials and complex numbers. It begins with a review of polynomial multiplication using the distributive property, then introduces the imaginary unit i, explaining its properties. The tutorial demonstrates how to multiply complex numbers by treating i as a variable and replacing i squared with -1. It concludes with an example of multiplying complex numbers with multiple terms, emphasizing the importance of combining like terms.

How do you handle 'i squared' when multiplying complex numbers?

After multiplying two complex numbers, how do you combine like terms to find the final answer?