$3^4\cdot3^2$
$\int_2^{\infty}\left(\frac{2lnx}{x}\right)dx$
$\left(\frac{2}{5}x-\frac{2}{5}mx\right)^2$
$a^2-ab+b^2^2$
$\int x^n\:\ln\left(x\right)dx$
$\frac{21x^{3}y^{6}}{7x^{2}y}$
$\left(\sqrt{x}\:+\sqrt{5}\right)\left(\sqrt{x}-\sqrt{5}\right)$
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