Question 445138

width {{{W=x+1}}} 

lenth {{{L=x+1}}} 

Height {{{H=x+4}}}

x^3+9x^2+6x+4

{{{V=WLH=(x+1)(x+1)(x+4)}}} ...multiply first two

{{{V=(x^2+x+x+1)(x+4)}}} .now multiply these two

{{{V=x^3+x^2+x^2+x+4x^2+4x+4x+4}}}

{{{V=x^3+6x^2+9x+4}}}

so, the answer is

{{{x^3 +6x^2+9x+4}}}