Phuong trinh co 2 nghiem phan biet, x1= -1.878, x2= -43.122
Phuong trinh co 2 nghiem phan biet, x1= -0.609, x2= -2.271
Phuong trinh co 2 nghiem phan biet, x1= -3.581, x2= -15.969
Phuong trinh vo nghiem.
Phuong trinh co 2 nghiem phan biet, x1= -6.000, x2= -9.000
Phuong trinh vo nghiem.