$$( 3 x ^ { 3 } + 4 x ^ { 2 } + 5 x + 18 ) ( x + 2 )$$
$\left(x+2\right)^{2}\left(3x^{2}-2x+9\right)$
$$3x^{4}+10x^{3}+13x^{2}+28x+36$$
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$3x^{4}+10x^{3}+13x^{2}+28x+36$