(а^(1/3)+b^(1/3))*((a^(2/3))-(a^(1/3))*(b^(1/3))+(b^(2/3)))
=
(a^(2/3))-(a^(1/3))*(b^(1/3))+(b^(2/3))
=(а^(1/3)+b^(1/3))
По фсу суммы кубов.
Объяснение:
