$\lim_{x\to2}\frac{x+1}{2-x}$
$\log_x\left(\frac{16}{625}\right)=4$
$3x^5-x^3$
$28-\left(-37\right)$
$\left(2s+a-4n\right)^2$
$\int8x^{\frac{1}{2}}dx$
$276+196$
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