Algebra 2 - Multiplying complex numbers (4-5i)(4+i)

The video tutorial explains two methods for multiplying binomials: the FOIL method and the square box method. The instructor prefers the square box method for its organizational benefits, as it visually represents the multiplication as finding the area of a rectangle. The tutorial demonstrates both methods, showing that they yield the same results. Emphasis is placed on expressing the final answer in the form of a complex number, a + bi.

Describe the FOIL technique and its components.

What is the required form for writing a complex number?