Question

The length of a rectangle is the sum of two whole numbers. The width of the rectangle is the difference of the same two whole numbers. Using these facts, write a verbal expression for the area of the rectangle.

Answer 1

length = a + b

width = a - b


(a + b) (a - b) = a^2 - b^2

Answer 2

Ahhh.... Okay. That makes sense. Thank you very much!