$sin\left(3\pi-x\right)=sinx$
$\sqrt[2]{44.6446}$
$\frac{d}{dx}\frac{x^2-2x-3}{x+2}$
$\lim_{x\to\infty}\left(\frac{x+1}{x+2}\right)^{2x}$
$\frac{2x^3+x^2+3}{x-3}$
$\left(\:3ab\:\:-\:\:2\right)\:\:\:\cdot\:\:\:\left(3b\:\:+\:\:2\right)\:$
$\frac{sen\:\theta\:-cos\theta\:}{sen\:\:\theta\:}$
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