The area of a rectangular wall of a barn is 42 square feet. Its length is 8 feet longer than twice its width. Find the length and width of the wall of the barn.

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The area of a rectangular wall of a barn is 42 square feet. Its length is 8 feet longer than twice its width. Find the length and width of the wall of the barn.

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1=A(x-1)+B(x+1) find A and B

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