SOLUTION: A rectangle is drawn so that the width is 4 feet shorter than the length. The area of the rectangle is 12 square feet. Find the length of the rectangle.

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Question 918182: A rectangle is drawn so that the width is 4 feet shorter than the length. The area of the rectangle is 12 square feet. Find the length of the rectangle.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

     .

L(L-4) = 12ft^2

L^2 - 4L - 12 = 0 (Tossing out the negative solution for unit measure)

(L+2)(L-6) = 0

L = 6ft

And...checking

(6ft)(2ft) = 12ft^2