$2sen\left(\frac{\pi}{3}+x\right)=-\sqrt{2}$
$\int\pi\left(\sin\left(\pi x\right)\right)dx$
$2y+\left(-1+5y\right)$
$\int-\frac{4sin4x}{cos4x}dx$
$\lim_{x\to0}\left(\sec\left(x\right)-\tan\left(x\right)\right)$
$50x^2-32$
$2n+3.5=17.5$
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