Multiply monomials to find the area of a square

The video tutorial explains how to find the area of a square by using the formula base times height. It introduces the concept of right angles in a square and applies the formula to a square with sides labeled CD. The tutorial also covers simplifying monomials in the context of area calculation, resulting in expressions like C^2 and D^2. The session concludes with a brief summary of the steps involved.

Why can we only simplify terms when they are like terms?

What is the result of simplifying C * C * D * D?