Дано: |c| = 2 |b| = 3 (c.b) = 45∣c∣=2∣b∣=3(c.b)=45
с и б вектора
45 градусов
Найти: (с + 5b) * (3с - 2b)
Пмогите как можно скорее прошу ​
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