Polynomials and monomial

1. 

   Examine the following drawing.  Show the sum of the areas of the four smaller rectangles and the sum of the area of the large rectangle.  Explain how they are related and why this is so.

2.  Simplify each expression

1. (3xy³)(2x³y)
2. (x with a exponent of 2 + 2x + 3)(x with a exponent of 2 – 2x – 2)