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=\int {3u^{2}+6u+1}{du}\\[2ex]={3u^{3}+3u^{2}+u}{\bigg |}_{-2}^{2}\\[2ex]={3\cdot 2^{3}+\cdot 2^{2}+2-3\cdot -2^{3}+3\cdot -2^{2}-2}\\[2ex]={52}\end{aligned}}}