Предмет: Математика, автор: DariaAapril

является ли корнем уравнения x(x-5)=6 число: а) 1; б) -1; в) 6; г) -6?

Ответы

Автор ответа: nkkzz

0

x^2-5x-6=0
D=25-4*(-6)=49
X1=5+7/2=6
X2=5-7/2=-1
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