$\int\frac{5x^2+17x+34}{\left(x-3\right)\left(x^2+7\right)}dx$
$2x\left(x+y\right)+5\left(x^2+xy\right)$
$x^6\cdot4x$
$2\tan^2-3\tan+1=0$
$25abc-33abc$
$7+5\left(-34\right)$
$\lim\:_{x\to\:1}\left(\frac{2x^2-x-1}{x-1}\right)$
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