$117.04-89.04$
$\left(7^{a^2}-b\right)\left(3^a-2b\right)$
$2x^2+x+3=0$
$\int\sqrt{r^2+z^2}dr$
$3x^2y^2dx+2x^3ydy$
$\left(3x+8\right)\left(y^2+4\right)dx-4y\left(x^2+5x+6\right)dy$
$\lim_{n\to\infty}\left(\frac{6n^3+n^2-n}{3n^3+n+10n^2}\right)$
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