$\frac{2x-3}{3^22}$
$4\cdot\left(nx\right)\cdot x^n$
$-\frac{1}{y}=\frac{x^2-2x-3}{2}+\ln\left(1+x\right)$
$-2a+5b-3c-4a-b-8c$
$\lim_{x\to2}\left(\frac{e^x-e^2}{x-2}\right)$
$101\:x\:99\:-\:102\:x\:98$
$\int\left(x^2e^9\right)dx$
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