SOLUTION: The length of a rectangle is 5 m more than its width. What is the width of the rectangle if it's area is 84 m^2?

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Question 1017917: The length of a rectangle is 5 m more than its width. What is the width of the rectangle if it's area is 84 m^2?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
l=w+5
w(w+5)=84
w^2+5w-84=0
(w+12)(w-7)=84
w=-12,7
The width is 7m, the length is 12m!!!!!!!!!!!!!!