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Mathematics 5 Online
OpenStudy (anonymous):

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

OpenStudy (anonymous):

\[A=(3x-y)(3x+y)cm^2=\]

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