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МатематикаВопрос:
81. Simplify the expression: $$ \sqrt{x^2} $$
Ответ:
Решение:
- Свойство квадратного корня: Квадратный корень из квадрата числа равен модулю этого числа.
- Запишем: $$ \sqrt{x^2} = |x| $$
Ответ: $$|x|$$
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