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.
10
2.
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?
10
3.
Use algebra or a geometric model to compare the areas and justify the previous
answer.
10
4.
Explain why the method for factoring shown in this lesson is called the
product-sum method.