Program GIAI_PHUONG_TRINH_BACII;
Uses crt;
Var a,b,c,d,x,x1,x2: real;
Begin
Clrscr;
Writeln('GIAI PHUONG TRINH BAC II: ');
Writeln('-------------------------------------------');
Write('Nhap he so a='); readln(a);<br /> Write('Nhap he so b='); readln(b);<br /> Write('Nhap he so c='); readln(c);<br /> If a=0 then<br /> If b=0 then<br /> If c=0 then<br /> Writeln('Phuong trinh co vo so nghiem')
Else Writeln('Phuong trinh vo nghiem')
Else Writeln('Phuong trinh co mot nghiem: x=',-c/b: 4: 2)<br /> Else<br /> Begin<br /> D:=b*b-4*a*c;<br /> If D=0 then Writeln('Phuong trinh co nghiem kep: x=',-b/(2*a): 4: 2)<br /> Else<br /> If D<0 then Writeln('Phuong trinh vo nghiem')
Else
Begin
x1:=(-b-sqrt(D))/(2*a);
x2:=(-b+sqrt(D))/(2*a);
Writeln('Pt co 2 nghiem la x1= ',x1:4:2 ,' va x2=',x2:4:2);
End;
End;
Readln
End.