SOLUTION: The width of a rug is 3 feet shorter than it's length. if the area of the rug is 108 square feet, what are the dimensions of the rug?

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Question 283689: The width of a rug is 3 feet shorter than it's length. if the area of the rug is 108 square feet, what are the dimensions of the rug?

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let the length be x
the width will be x-3
area of rectangle = L * W
area = x(x-3)
108=x^2-3x
x^2-3x-108=0
x^2-12x+9x-108=0
x(x-12)+9(x-12)=0
(x-12)(x+9)
x=12 feet is the length of the rug
12-3 = 9 feet is the width of the rug