Предмет: Геометрия, автор: romadimitrov84

Дано взаемно перпендикулярнi венктори а і b. Знайдіть: (а - 2b)(a + b), якщо |a| = 2, |b| = 3.​

Ответы

Автор ответа: danaburkovskij
0

Ответ:-20

Объяснение:(2-2*3)(2+3)=(-4)(5)=-20

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