$\left(a^5-3a+1\right)a-1$
$-5x^7\left(6x^9+3x^5+3x^3\right)$
$4\tan\left(\frac{\pi}{6}\right)+2\cot\left(\frac{\pi}{3}\right)$
$-xp^2+p$
$\int_0^{\infty}\left(\ln\left(x\right)\right)^2dx$
$13.400+13.400$
$121x^2-\:144k^2$
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