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Автор - dp1570197

решите 36 и 37 пж с решением​

Ответ

Проверено экспертом

Автор - Evgenia4836

(x-1/x)²=5²

x²-2+1/x²=25

x²+1/x²= 27

(x+1/x)²= x²+2+1/x²= 14+2= 26

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