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Posted by **Rachal** on Wednesday, February 9, 2011 at 6:09pm.

l=

w=

- beginning algebra -
**helper**, Wednesday, February 9, 2011 at 6:55pmw = width

L = 2w + 1

A = Lw

28 = w(2w + 1)

28 = 2w^2 + w

Solve for w by completing the square.

- beginning algebra -
**Anonymous**, Wednesday, April 20, 2011 at 11:04pm4 7

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