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The area A of a shape is related to the length of one side by the quadratic equation: A-4x +38x +99. What is the

The area A of a shape is related to the length of one side by the quadratic equation: A-4x +38x +99. What is the maximum area that could be obtained by varying a ? Enter your answer in the box below, without units and rounded to two significant figures. Answer:

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