Posted by **kim** on Thursday, February 3, 2011 at 6:36pm.

The length of the side of a rectagular desk is given by 9x-2y cm.

The length of the front is given by 9x+2ycm. What is an algebriac expression for the area of the top of the rectangular desk? Including correct units

- algebra -
**Damon**, Thursday, February 3, 2011 at 6:38pm
(9x-2y)(9x+2y)

81x^2-4y^2 in cm^2

- algebra -
**Henry**, Thursday, February 3, 2011 at 9:21pm
Kim, check your 2-1-11,12:08pm post.

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