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Carissa takes a square piece of cardboard and cuts 5 in. by 5 in. squares out of each corner. She folds the sides up to make a box without a top.

What equation can Carissa use to determine the volume of the box, where x is the side length of the original piece of cardboard?

Express the equation in standard form.

V=_____

Answer :

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Since the corners of the square are already cut out with the x in, the new dimensions is equal to 5-2x. The area of the base of the box is therefore equal to (5-2x)². Then, multiplying this expression of x will give us an answer of,
                                          V = (5-2x)²x

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