# math

An open box is to be made from a rectangular piece of tin 12 inches long and 10 inches wide by cutting pieces of x-inch square from each corner and bonding up the sides. find the formula that expresses the volume of the box as a function of x.

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1. volume = x(12-2x)(10-2x)

expand if needed.

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2. V=120x-44x2+4x3

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