$\:\left(3x\:2\:+\:2x\:-\:1\right)\:d$
$\int\frac{2}{x^3\sqrt{x^2-3}}dx$
$\frac{2}{\left(1-sina\right)\left(1+sina\right)}$
$36x^2-16b^2$
$\left(1+4\right)-1-\left(7-4\right)$
$\frac{9m^2n^6}{6m^3n^4}$
$-432+1989$
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