$\lim_{x\to0}\left(\sqrt{x^2+5x+1}-2x\right)$
$x^2-8x=3$
$4q-q+6q-5q$
$\csc^6\left(x\right)-\cot^6\left(x\right)$
$y=\sqrt{\frac{1}{s}+\frac{1}{kc}}$
$4a+7a+6$
$\int e^{-2.5x}\:\cdot\:1.6x\:dx$
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