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Algebra Help OnlinePre Algebra Help Online. Algebra 1 Help Online. Algebra 2 Help Online. Help with Algebra Word Problems. The length of a rectangle exceed its width by 4 feet. If its area is 45 sq. feet. Find its dimensions. Let the width of the rectangle = x. Therefore length of the rectangle = x 4. Length exceed its width by 4 feet). Area of the rectangle = 45. Area of the rectangle = Length * Width. 45 = x(x 4). 45 = $x 2$ 4x. X 2$ 4x - 45 = 0. Solve for x,. X 2$ 4x - 45 = 0. X 2$ 9x - 5x - 45 = 0. X(x 9) - 5(x 9) = 0.
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