$14x+49$
$2.x\:+1\:=\:-25$
$0.6\:.\:15$
$\tan^2w\cos^2w$
$\lim_{x\to0}\left(\frac{e^{2x}-1}{xe^x-x}\right)$
$\frac{d}{dx}\:x=1$
$\int\left(49x^2\left(343x^3+1\right)^{12}\right)dx$
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