5 умножить на 2 равно 10 всего дали бананов
А={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}
В⊂А, С⊂А, Д<span>⊂А.
В=</span>{6,12,18}
С={4,8,12,16}
Д={2,4,6,8,10,12,14,16,18}
BUC={4,6,8,12,16,18}
А∩(BUC)={4,6,8,12,16,18}
(а-0.3)(а^2+0.3+0.09)=<span>(а-0.3)(а^2+0.39)=a^3-0.3a^2+0.39a-0.117
</span><span>(а-0.3)(а^2+0.3a+0.09) = a^3-0.027</span>