12th grade
posted by Anonymous .
The length of a rectangular floor is 2 feet more than its width. The area of the floor is 168 square feet. Kim wants to use a rug in the middle of the room and leave a 2 foot border of the floor visible on all sides. What should the length (the longer side) of the rug be?

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first first the dimensions of the room ....
x(x+2) = 168
x^2 + 2x  168 = 0
(x12)(x+14) = 0
I am sure you can take it from here