PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS OR WILL BE REPORTED A box is 15 x 20 inches. In the box there are cut out squares of the same size from each corner. Mark the side of the cut-out square by x. write an expression the represent the width of the box.

İt is solved by using derivative

The edges of box are 20–2x,15–2x and x

Volume=(20–2x).(15–2x).x

İf you take derivative and then find the roots of derivative we obtain exstramum points that means these values make volume maximum or minimum

But

Answer is not rational

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