$40tu^3v-15tu^3v+19t^2u^2v-20tu^3v$
$\int\left(e^x\right)\left(1+e^x\right)^{10}dx$
$\frac{dy}{dx}=\frac{x+4}{y-4}$
$\frac{\sqrt[3]{-375\:m^{-2}n^{-2}}}{192\:m^4n^{-\:7}}$
$\int sen8xsen3xdx$
$\int cos\left(x\right)sen^8\left(x\right)dx$
$r2+13\le12$
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