Предмет: Алгебра, автор: Elismej

ПОМОГИТЕЕЕ ПОЖАЛУЙСТА

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Ответы

Автор ответа: SaliraS

Ответ:

y= -1; x=1

Объяснение:

x=2+y

(2+y)^2+y^2=2

4+4y+y^2+y^2-2=0

2y^2+4y+2=0 :2

y^2+2y+1=0

Д=2^2-4*1*1=0 корень из Д=0

y=-2+0/2=-1

x=2+(-1)=1

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