5.5 The Substitution Rule/2

$\int x^{3}(2+x^{4})^{5}dx{\text{,}}\quad u=2+x^{4}$

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle du=(4x^{3})dx={\frac {du}{4}}=x^{3}dx}

<math> \int x^3(2+x^4)^5dx = \int