Program a;
var D,a,b,c: real;
begin
Readln(a,b,c);
//a*X^2 + b*X + c = 0
writeln (a,'*X^2 + ',b,'*X + ',c,' = 0');
D:=b*b-4*c*a;
if (d<0) then writeln ('D<0!') else<br>if (d=0) then writeln ('X= ',(-b+sqrt(D))/2) else
if (d>0) then writeln ('X1= ',(-b+sqrt(D))/(2*a):0:1,'; X2= ',(-b-sqrt(D))/(2*a):0:1);
end.