Tutorial - Combining complex numbers ex 8, (8 + 20i) - (8 + 12i)

The video tutorial explains how to apply the distributive property, especially when dealing with negative signs outside parentheses. It demonstrates the process of distributing the negative sign across terms within the parentheses. The tutorial then transitions to combining complex numbers by focusing on combining real and imaginary parts separately. The final result of the example provided is a complex number with only an imaginary part.

What is the first step to take when distributing a negative sign outside of parentheses?

How do you eliminate parentheses when distributing a subtraction sign?

What do you get when you combine the real parts of the complex numbers 8 and -8?

What is the result of combining the imaginary parts 20i and -12i?

What is the final answer when combining the complex numbers in the example?