Question

Can you help me with question #75?

Answer 1

`\bf \textit{volume of a rectangular prism}\\\\ V=lwh\quad \begin{cases} l=length\\ w=width\\ h=height\\ ------\\ l=x+5\\ w=x+4\\ h=x+2 \end{cases}\implies V=(x+5)(x+4)(x+2) \\\\\\ V=(x^2+9x+20)(x+2)\\\\\\ V=x^3+9x^2+20x+2x^2+18x+40 \\\\\\ V=x^3+11x^2+38x+40`