$\lim_{x\to-3}\left(x^2-3x+2\cdot x-3\right)$
$y^2\sqrt{y}$
$\left(3z+5y\right)\left(3z-5y\right)$
$\int\frac{\ln\left(z\right)}{z^2}dz$
$-2x^2-200x-80000$
$+4\:x\:-4$
$\int x^3\left(x^2-7\right)^5dx$
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