$\lim_{x\to-4}\left(\frac{x^2+6x+9}{x+3}\right)$
$3\sqrt{189}+6\sqrt{448}$
$\int_1^xln\left(x\right)dx$
$2x^2-12x+2$
$4a^2-12ad+9a^2$
$8-5z=-10-2z$
$\left(-16\right)\left(4\right)\left(-13\right)$
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