$\frac{d}{dx}e^{5x^2+1}$
$sen^2\:-45$
$\left(3x+4\right)\left(5x+2\right)$
$3x^3-6x^2+4x-2\cdot x^3-3x+1$
$\int\frac{lnx}{x^{11}}dx$
$\frac{\sin^2-\sin^2\cos}{\cos}=\frac{\sin^4}{\cos^2}$
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