Question

разложите на множители s³ - t³ + 11s²t - 11st²

Answer 1

$s^3-t^3+11st(s-t)=(s-t)(s^2+st+t^2)+11st(s-t)=\=(s-t)(s^2+12st+t^2)$

Answer 2

s³ - t³ + 11s²t - 11st²=(s-t)(s²+st+t²)+11st(s-t)=(s-t)(s²+st+t²+11st)=
=(s-t)(s²+12st+t²)