SOLUTION: 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 t

Algebra ->  Test  -> Lessons -> SOLUTION: 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 t      Log On


   

Question 472508: 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.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Area = (3x-2y)(3x+2y) sq cm

We don't even need to expand it; all we need to do is realize it is a difference of two squares.

Area = 9x^2 - 4y^2 sq cm