5.4 Indefinite Integrals and the Net Change Theorem/9

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle {\begin{aligned}f(x)&=x^{2}\\[2ex]&=x^{3}+(x+1)^{3}\\[2ex]&=\int _{1}^{5}f(x)\,dx\\[2ex]&=\left({\frac {1}{x^{2}}}\right)\end{aligned}}}