$4x^2+4x+2$
$e^{\left(2x+3y\right)}dy-e^{\left(x-y\right)}dx=0$
$3\:-\:4+5\:-\:6+7\:-\:8\:-\:10$
$\lim_{x\to0}\left(\frac{3-\cos3x}{1-3\cos2x}\right)$
$\lim_{x\to0}\left(\sqrt{x^2+2ax}-\sqrt{x^2+2bx}\right)$
$8x+2>6x-1$
$2x-\sqrt{x+7}=7$
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