$x^3-4\le0$
$\frac{x-1}{x-1}$
$\frac{dy}{dx}=-10.x+10$
$\left(k-1\right)\left(k^2+k+1\right)$
$7z^2\:-\:33z\:-\:10$
$7\cdot\left(6+2\right)$
$\int_4^5\frac{x}{4-x^2}dx$
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