$\frac{dy}{dx}=1-cosx$
$\left(t+4\right)\left(t+7\right)$
$cos^2-sen^2b$
$\:\left(2x\right)^2\:=\:4x^2$
$\int\sqrt[4]{\left(x^3-8\right)}x^2dx$
$4-6x^225$
$\int\:xe^{71x}dx$
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