Автор - dmitri200326

решите графически систему уравнений {x+y=7{xy=10

Ответ

Автор - dimasolzhenitsyn

x=7-y

(7-y)y=10

y=5 y=2

x=7-5=2 x=7-2=5

(2 , 5) (5 , 2)

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