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Mathematics 52 Online
OpenStudy (anonymous):

A library building is in the shape of a rectangle. Its floor has a length of (3x + 5) meters and a width of (5x − 1) meters. The expression below represents the area of the floor of the building in square meters. (3x + 5)(5x − 1) Which of the following simplified expressions represents the area of the floor of the library building in square meters? 28x − 5 15x2 − 5 15x2 + 28x − 5 15x2 + 22x − 5

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