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OpenStudy (anonymous):
Rhett decides to build a square room for his movie and music collection. If the area of the room is 4x^2 + 28x + 49 square feet, what is the length of one side of the room?
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Directrix (directrix):
Area of Square = side * side 4x^2 + 28x + 49 = (side)^2 (2x + 7) ^2 = (side) ^2 2x + 7 = side of room
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