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A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = x2+7x+4. x is the extension of sides. What is the new area?

Answer» A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = x2+7x+4. x is the extension of sides. What is the new area?


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