What would be the next step when factoring: $\displaystyle x^3 - 3x^2 + 3x - 28$
and
$\displaystyle s^4 - 38s^2t^2 + 72t^4$
and
$\displaystyle x^4 - 29x^2y^2 + 100y^4$
What would be the next step when factoring: $\displaystyle x^3 - 3x^2 + 3x - 28$
and
$\displaystyle s^4 - 38s^2t^2 + 72t^4$
and
$\displaystyle x^4 - 29x^2y^2 + 100y^4$