$35\:+\:t\:-\:6t^2$
$\int\left(\sec^2\left(\frac{x}{4}\right)\right)dx$
$\int\frac{y^2-25}{y^9}dy$
$64x^2-90x+25$
$5xa-2yb+5-2xa-3yb+7xa-1yb+2$
$\frac{6.5-4}{9-4}$
$8.6+4.5$
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