aх^2+вх+с=0
var a, b, c, d, x1, x2 : real;
begin
write('a = '); readln(a);
write('b = '); readln(b);
write('c = '); readln(c);
d := b*b + 4*a*c;
if d=0 then
begin
x1 := b / (2 * a)
writeln (x1:3:3);
end
else
if d>0 then
begin
x1 := (- b + sqrt(d) / (2 * a);
x2 := (- b - sqrt(d) / (2 * a);
writeln (x1:3:3, ' ', x2:3:3);
end
else
writeln ('Нет решения');
end.