Предмет: Геометрия, автор: timurtrushov2008

ДАЮ 20 БАЛОВ РЕШИТЕ ЗАДАНИЯ ПО РИСУНКУ СНИЗУ номер 5

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Ответы

Автор ответа: tgolubovskaia

Ответ:

a · b = (a₁ * b₁) + (a₂ * b₂);
a · b = (6 * 3) + (-5 * 4) = 18 - 20 = -2.

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