SOLUTION: the area of a rectangle wall of a barn is 171 square feet. Its length is 10 feet longer than its width. Find the length and width of the wall of the barn.

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Question 469008: the area of a rectangle wall of a barn is 171 square feet. Its length is 10 feet longer than its width. Find the length and width of the wall of the barn.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
w(w+10)=171
w2+10w=171
w2+10w-171=0
(w+19)(w-9)=0
w=-19 or 9
w+10=19
Throwing out the negative answer, we get the dimensions of the barn wall to be 19' by 9'. Try and hit that..