6.1 Areas Between Curves/25

${\begin{aligned}&\color {red}\mathbf {y=x^{2}} &\color {royalblue}\mathbf {y={\frac {2}{({x^{2}}+1)}}} \\\end{aligned}}$

Failed to parse (unknown function "\begin{align}"): {\displaystyle \begin{align} \int_{1}^{-1}((\frac{2}{({x^2}+1))-(x^{2}))dx &= \int_{-3}^{-2}\left(2x^2-8)\right)dx \\[2ex] \end{align} }