Var a, b, c, x1, x2, D:real; begin writeln ('Введите значение a, b и c'); readln (a, b, c); D:=sqr(b)-4*a*c; if D>0 then begin x1:=(-b+sqrt(D))/2*a; x2:=(-b-sqrt(D))/2*a; writeln ('x1 = ', x1, ' x2 = ', x2)end else writeln ('Корней нет'); end.