$cosx-2sinxcosx=cos5x$
$\int\frac{\senx}{e\cos x}dx$
$\int\frac{\ln\left(x\right)\sqrt[4]{1+3\ln^2\left(x\right)}}{x}dx$
$2x^3+10x^2+8x$
$\frac{s}{6}+12\ge9$
$3y^3+3y^2-18y$
$\:\frac{320\pi}{180}$
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