$\lim_{n\to-\infty}\left(1+e^{-nx}\right)$
$9x^2-24xw+16w^2$
$5xy+5=0$
$\int\frac{5x^2-x+11}{\left(x-1\right)\left(x^2+4\right)}dx$
$2r^2+12+18$
$2\csc x\cot\frac{1}{2}x+\csc\left(\frac{1}{2}\right)x$
$6^{-8}\cdot6^5$
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