$\int\frac{2x+6}{x^2+3x+2}dx$
$-k+3k$
$\int\left(\frac{3}{4\:x\:^{\:3\:}}\right)dx$
$4x^2-24x-4=81$
$\left(-3xy^2+2x^2y^2\right)^2$
$7\left(3n\right)$
$\int\left(x^{-3}sin\left(x^{-2}+1\right)\right)dx$
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