An open box is to be made from a piece of cardboard 11 in by 17 in, by cutting out a square of length x from each corner and turning up the sides. Express the volume V of the box as a function of the length x of the side of the square cur from each corner.

Length of box = 17-2x

width of box = 11-2x
height of box = x

volume = x(17-2x)(11-2x)