Предмет: Алгебра, автор: klimenkol21

Тема: Комплексные числа
Выполнить действия:
3 / 2-3i + 3 / 2+3i

/ - это дробь

Ответы

Автор ответа: xtoto
1
\frac{3}{2-3i}+\frac{3}{2+3i}=\frac{3*(2+3i)}{(2-3i)*(2+3i)}+\frac{3*(2-3i)}{(2+3i)*(2-3i)}=\frac{3*(2+3i)+3*(2-3i)}{(2-3i)*(2+3i)}=\\\\=\frac{3*[2+3i+2-3i]}{4-9i^2}=\frac{3*4}{4+9}=\frac{12}{13}
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