HCT , Hung t , Chu anh , ... cung cac sieu sao toan giup em voi ! Thank....?

Cho PT : x^2 + ax + b =0

Xac dinh a, b de phuong trinh co 2 nghiem phan biet x1 , x2 thoa man :

x1 + x2 = 5

x1^3 + x2^3 =35

Tinh cac nghiem do

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