[tex]y^{3} -5y^{2} -y+5=0\\y^2(y-5)-(y-5)=0\\(y-5)(y^2-1)=0\\(y-5)(y-1)(y+1)=0\\y-5=0; y-1=0; y+1=0\\y=5; y=1; y=-1\\[/tex]
Ответ: -1; 1; 5
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[tex]y^{3} -5y^{2} -y+5=0\\y^2(y-5)-(y-5)=0\\(y-5)(y^2-1)=0\\(y-5)(y-1)(y+1)=0\\y-5=0; y-1=0; y+1=0\\y=5; y=1; y=-1\\[/tex]
Ответ: -1; 1; 5