6.1 Areas Between Curves/18

${\begin{aligned}&\color {red}\mathbf {y=8-x^{2}} &\color {royalblue}\mathbf {y=x^{2}} \\&x=-3&x=3\\\end{aligned}}$

Failed to parse (unknown function "\begin{align}"): {\displaystyle \begin{align} 8-x^2 &= x^2 \\ 8 &= 2x^2 \\ 4 &= x^2 \\ }

$x=\pm 2$