$45+-12+28+-57+19+-18+35+-28+78+-14+54+-45$
$\lim_{x\to0}\left(\sin\left(x\right)\cdot\ln\left(2x\right)\right)$
$10m+12n-5m+3n+5$
$\left(2^s\right)^t$
$\frac{d}{dx}2xy+\pi siny$
$5a+20$
$4x^2-4x+16a$
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