$\:x^2\:-\:4\:\:\:\:$
$\int_x^4dx$
$4m^2-44m+121$
$2\left(a-5\right)^2$
$9-\left(a+1\right)^6$
$\left(-5\right)\cdot\left(+7\right)-\left(-3\right)\cdot\left(+10\right)$
$\lim_{x\to-\infty}-\frac{3}{5}x^3-\frac{2}{3}x^2+8x-\frac{3}{5}$
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