$$\left. \begin{array} { l } { ( 3 x + 1 ) ( x ^ { 2 } + 2 x + 1 ) } \\ { ( 5 x - 2 ) ( x ^ { 2 } - x + 4 ) } \end{array} \right.$$
$\left(5x-2\right)\left(3x+1\right)\left(x+1\right)^{2}\left(x^{2}-x+4\right)$
$\left(3x+1\right)\left(x+1\right)^{2},\ \left(5x-2\right)\left(x^{2}-x+4\right)$
