Use algebra to explain how you know that a rectangle with side lengths one less and one more than a square will always be 1 square unit smaller than the square.
What is the difference in the areas of a square and rectangle if the rectangle has side lengths 2 less and 2 more than a square?
Explain why the method for factoring shown in this lesson is called the product-sum method.
Use algebra or a geometric model to compare the areas and justify the previous answer.