$31\left(4p+q\right)$
$\int\left(\frac{9x}{9+x^2}\right)dx$
$\left(-68\right)-\left(-4\right)+\left(-73\right)-\left(52\right)+\left(+160\right)$
$\left(4x^2+7x-3\right)^2$
$\lim_{x\to1}\frac{x^2+4x-5}{x-1}$
$3\:-\:\left(5\:+\:7\:-\:10\:-\:9\right)$
$3w-9-10w-8$
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