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МатематикаВопрос:
78. Perform the operation: $$ x + \frac{1}{x} $$
Ответ:
Решение:
- Приведем к общему знаменателю: Общий знаменатель — $$x$$.
- Запишем: $$ \frac{x \cdot x}{x} + \frac{1}{x} = \frac{x^2+1}{x} $$
Ответ: $$ \frac{x^2+1}{x} $$
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