К) (- b - 3) (9 - 3b + b2) =
= - (b + 3) (9 - 3b + b2) =
= - (27 + b3) =
= - 27 - b3 =
= - b3 - 27
л) (t + 2) (t - 2) (t4 + 4t2 + 6) =
= (t2 - 4) (t4 + 4t2 + 6) =
= t6 + 4t4 + 6t2 -4t4 - 16t2 - 24 =
= t6 - 10t2 - 24
м) (z + 1) (z - 1) (z4 + 1 + z2) =
= (z2 - 1) (z4 + z2 + 1) =
= z6 - 1