$\int3xe^{5^2}dx$
$e^{st}e^{-2t}$
$\sin\left(x+\frac{\pi}{2}\right)-\sin\left(x-\frac{\pi}{2}\right)=1$
$\left|-2\right|-\left|2\right|$
$-2^2-8-2+1$
$\frac{1}{x-4}-\frac{1}{x+5}$
$\frac{x^2y^{-7}}{x^8y^{-5}}$
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