begin{center}
begin{tikzpicture}[scale=1.2,thick]
draw[->](-3mm,0mm)--(36mm,0mm) node at (34mm,-2.4mm){$p$};
%       draw[shift={(+0.5,0)}] (0pt,2pt) -- (0pt,-2pt) node[below] {$bar{p}$}
draw[->](0mm,-3mm)--(0mm,14mm) node[above] {$beta  p^2-p (beta +kappa sigma     +1)+1$};
draw[domain=-0.05:2] plot(x,{((x-0.5))*(x-1.2)});
end{tikzpicture}
end{center}