The forward-path transfer function and the feedback-path transfer function of a single loop negative feedback control system are given as
\({\rm{G}}\left( {\rm{s}} \right) = \frac{{{\rm{K}}\left( {{\rm{s}} + 2} \right)}}{{{{\rm{s}}^2} + 2{\rm{s}} + 2}}{~\rm{and\;H}}\left( {\rm{s}} \right) = 1\)
respectively. If the variable parameter K is real positive, then the location of the break point on the root locus diagram of the system is __________Enter numerical value using the virtual keypad. Round off where necessary.