2 câu trả lời
program oken;
uses crt;
var a,b,c,1x,2x,d:real;
begin
clrscr;
write('Nhap a: '); readln(a);
write('Nhap b: '); readln(b);
write('Nhap c: '); readln(c);
d:=b*b-4*a*c;
if d>0 then
begin
1x:=(-b+sqrt(d))/(2*a);
2x:=(-b-sqrt(d))/(2*a);
writeln('2 nghiem PT la: ',1x:0:2,' va: ',2x:0:2);
end;
else
if d=0 then
begin 1x:=(-b)/(2*a);
writeln('PT co nghiem kep la: ',1x:0:2);
end;
else writeln('PT vo nghiem');
readln;
end.
Cho mình câu trả lời hay nhất nha
uses crt; var a,b,c,x1,x2,d:real;
BEGIN clrscr; write('Nhap a: ');
readln(a); write('Nhap b: ');
readln(b); write('Nhap c: ');
readln(c); d:=b*b-4*a*c;
if d>0 then begin
x1:=(-b+sqrt(d))/(2*a);
x2:=(-b-sqrt(d))/(2*a);
writeln('2 nghiem PT la: ',x1:0:2,' va: ',x2:0:2);
end else if d=0 then begin x1:=(-b)/(2*a);
writeln('PT co nghiem kep la: ',x1:0:2);
end else writeln('PT vo nghiem');
readln END.