5.4 Indefinite Integrals and the Net Change Theorem/25

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle {\begin{aligned}&\int _{-2}^{2}({3u+1})^{2}du\\[2ex]&\int {3u^{2}+6u+1}du\\[2ex]&{3u^{3}+3u^{2}+u}\end{aligned}}}