$$\left. \begin{array} { l } { x ^ { 3 } - 27 } \\ { x ^ { 2 } + 6 x - 27 } \end{array} \right.$$
$\left(x+9\right)\left(x^{3}-27\right)$
$$x^{3}-27=\left(x-3\right)\left(x^{2}+3x+9\right)$$ $$-27+6x+x^{2}=\left(x-3\right)\left(x+9\right)$$
$$\left(x-3\right)\left(x+9\right)\left(x^{2}+3x+9\right)$$
$$x^{4}+9x^{3}-27x-243$$
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$x^{3}-27,\ \left(x-3\right)\left(x+9\right)$
