SOLUTION: A rectangle has length 3cm greater than its width, if it has an area of 28cm2, what is the dimesions of the rectangle??

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Question 849498: A rectangle has length 3cm greater than its width, if it has an area of 28cm2, what is the dimesions of the rectangle??
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,



Let x represent  the width

(x+3cm)x = 28cm^2

 x^2 + 3x -28 = 0   (Tossing out the negative solution for unit measure)

(x+7)(x-4) = 0 , x = 4cm, the width.  The length is 7cm