Question 169283
The width of the box is x


The length of the box is (x + 2)


The height of the box is (x - 5)


The volume of a rectangular solid is given by length X width X height, so for this box:


{{{V=(x+2)(x)(x-5)}}}


Multiplying:


{{{V=(x^2+2x)(x-5)=red(x^3+2x^2-5x^2-10x)=green(x^3-3x^2-10x)}}}