$\frac{sen\:3x}{sen\:x}+\frac{cos\:3x}{cos\:x}$
$\log_{32}x=\frac{1}{5}$
$\left(3x^3-4y\right)^2$
$y^2-4y+2$
$\lim_{x\to0}\left(1+\sin x-e^x\right)$
$\left(2x-\:3x^2\right)^2$
$\int_{\pi}^{2\pi}\frac{1}{\sqrt{12-x^2}}dx$
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