Предмет: Алгебра, автор: enzhelika95

сколько корней имеет квадратный трехчлен 5х2-11х+7?

Ответы

Автор ответа: maks1ne

нисколько, т к дискриминант меньше нуля.

Автор ответа: nicky1997

D=b^2-4ac=11^2-4*5*7=121-140=-19
D<0 а значит корней нет

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