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ogent001
@ogent001
July 2022
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пусть x1 и x2 корни квадратного уравнения x^2-15x+7=0 Не решая уравнения вычислите 42-13x1/x1+42+9x2/x2
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Latac
Сокращаем х1 и х2, получается 42-13+42+9 = 80
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