$\lim_{x\to\infty}\left(3x^2-5x-11x^2\right)$
$\int\frac{x-1}{\left(x^3+4x^2+4x\right)^2}dx$
$\int2+\tan\:^2\left(x\right)dx$
$-2-2i$
$\cos x+2=3$
$\frac{2x^2+2}{6}+\frac{x}{4x+2}$
$cos\left(0.7642\right)$
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