The volume of a rectangular prism is represented by the function x3 + 9x2 + 6x – 16. the length of the box is x + 2 while the height is x + 8. find the expression representing the width of the box.

The volume of the box is length * width * height
x^3 + 9x^2 + 6x - 16 = (x + 2) * width * (x + 8) = (x^2 + 10x + 16) * width
using synthetic division
   -2        1  9    6  -16
                 -2 -14   16

   -8          1  7   -8     0
                   -8    8

                1 -1    0

Therefore, x^3 + 9x^2 + 6x - 16 = (x + 2)(x + 8)(x - 1)
Therefore, the width of the prism is x - 1

Idon’t understand sorry