7. Short Answer. The length of the side of a rectangular desk is given by 3x - 2y cm. The length of the front is given by 3x + 2y cm. What is an algebraic expression for the area of the top of the rectangular desk? Include correct units as part of your answer.
(Points : 3)

Question

7. Short Answer. The length of the side of a rectangular desk is given by 3x - 2y cm. The length of the front is given by 3x + 2y cm. What is an algebraic expression for the area of the top of the rectangular desk? Include correct units as part of your answer. 
(Points : 3)

anonymous · Answer

Length of side= width  = 3x -2y cm
Length of front = length = 3x +2y cm
Area = length * width = (3x -2y)*(3x +2y) sq. cm
Area = (3x)^2 -(2y)^2 sq. cm
Area = 9x^2 - 4y^2 sq. cm