$$\left. \begin{array} { l } { x ^ { 3 } + 2 x ^ { 2 } - 4 x - 8 , \quad 2 x ^ { 3 } + 7 x ^ { 2 } + 4 x - 4 } \end{array} \right.$$
$\left(x-2\right)\left(2x-1\right)\left(x+2\right)^{2}$
$\left(x-2\right)\left(x+2\right)^{2},\ \left(2x-1\right)\left(x+2\right)^{2}$
