$e^{-\left(x^2+1\right)}$
$\left(+5\right)\:-\:\left(-2\:+\:4\right)$
$\frac{-24+7}{5}\le3$
$7a+5c+4c$
$3\left(\frac{2}{3}-9\right)=\:3\left(\frac{2}{3}-5\right)$
$\int\frac{x-5}{\left(x^2-1\right)}dx$
$\left(5k-7j\right)^3$
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