Helena used a square cardboard to make an open box. he cut a small squares of the same dimensions from the corners of the cardboard then bent the sides upward . the length of the side of the cardboard used is 48 cm. how would you represent the area of the base of the box?

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2015-06-14T13:34:21+08:00

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The area of the base would be the center square which would be:
(48-2x)² = 2304-192x+4x²
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