$10a+20$
$\left(4g^3\cdot g^3\cdot2g\right)^2$
$\frac{xcosx}{senx}$
$11\left(+x^3-3x^2-144x+440\right)$
$\lim_{x\to0}\left(x^2-x^4\right)$
$\frac{sec\left(x\right)^2\left(x\right)}{sec\left(x\right)}+1$
$\int x^3\sqrt{2x+5}dx$
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